Càlcul analític cicle mitjà

40 Clcul analtic Matemtiques

Clcul analtic

Podem classificar les activitats de clcul segonslhemisferi cerebral que utilitzem per dur a ter-me el procs numric: El clcul global t lloc a la part dreta del cer-

vell. El clcul analtic es dna a la zona esquerra.

En el clcul global es processa la informaci apartir dimatges. Per exemple, si proposem elproblema segent:

2 pomes i 3 pomes, quantes pomes sn?

els alumnes el resoldran a partir dimatges:veuran les pomes i desprs respondran. Enaquest procs de resoluci no hi ha una seqn-cia, la resposta es veu a linstant.

En el clcul analtic es processa la informaci apartir de smbols numrics. Si preguntem:

Quant fan 15 ms 30?

els alumnes ho resoldran amb processos decomptatge: sumaran primer les unitats i desprsles desenes; o amb mtodes ms perfeccionats,com ara sumar primer 10 i 30 i, tot seguit, afe-gir-nhi 5. Aquests processos sn seqenciats;al contrari dels globals, desprs es poden ex-plicar.

Els alumnes, per poder dur a terme el clcul ana-ltic, han dhaver adquirit un gran nombre de des-treses. s necessari que tinguin un gran domi-ni del nostre sistema de numeraci, i amb aquestafinalitat cal fer activitats com les segents: Comptar de manera ascendent i descendent

dun en un, de dos en dos, de tres en tres, etc. Determinar els nombres anterior i posterior

duna srie numrica. Buscar la desena ms prxima. Buscar un nombre situat entre uns altres dos. Determinar el nombre ms gran o el ms pe-

tit dentre dos nombres.

NIVELLS DE CLCULANALTIC DELQUINZET

Els nivells estan organitzats de menys dificultata ms.

Tant la formulaci de les preguntes de les acti-vitats com la resoluci daquestes es fa oral-ment. La resposta es pot donar per escrit.

s aconsellable fer dos nivells a la setmana.

Matemtiques Clcul analtic

N61N

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101

Estratgies numriques

61.1.1. Digues el nombre anterior a:

10 , 41 , 43 , 40 .

61.1.2. Compta de tres en tres fins a 20 a partir de:

2,

12,

61.1.3. Tria el nombre ms gran entre:

13 i 3 23 i 22 43 i 23 13 i 22 43 i 53

61.1.4. Digues el nombre ms a prop de 10:

11 o 15 6 o 12 9 o 29 17 o 13 5 o 15

61.1.5. Compta de 24 a 0:

Estratgies de clcul

Srie 61.2.1

10 + 7 = 20 + 8 = 30 + 2 = 40 + 2 = 50 + 4 =

50 + 3 = 40 + 5 = 30 + 8 = 20 + 9 = 10 + 8 =

Srie 61.2.2

10 + 2 = 18 + 2 = 16 + 3 = 14 + 4 = 12 + 5 =

10 + 6 = 13 + 7 = 12 + 8 = 11 + 9 =

Srie 61.2.3

22 + 2 = 22 + 4 = 22 + 6 = 22 + 5 = 22 + 3 =

22 + 9 = 22 + 7 = 22 + 8 = 22 + 0 = 22 + 1 =

Srie 61.2.4

20 + 5 = 40 + 4 = 30 + 2 = 10 + 3 = 50 + 5 =

20 + 4 = 10 + 5 = 30 + 6 = 40 + 7 = 50 + 4 =

Srie 61.2.5

18 2 = 16 2 = 14 2 = 12 2 = 10 2 =

11 2 = 13 2 = 15 2 = 17 2 = 19 2 =


N62N

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102



20 , 51 , 53 , 50 .


24,

34,


15 i 5 25 i 35 45 i 25 15 i 35 45 i 55


21 o 25 16 o 22 19 o 39 27 o 23 15 o 25

62.1.5. Compta de 35 a 0:

Estratgies de clcul

Srie 62.2.1

10 + 1 = 20 + 2 = 30 + 3 = 40 + 4 = 50 + 5 =

50 + 1 = 40 + 2 = 30 + 3 = 20 + 4 = 10 + 5 =

Srie 62.2.2

20 + 1 = 28 + 2 = 26 + 3 = 24 + 4 = 22 + 5 =

20 + 6 = 23 + 7 = 22 + 8 = 21 + 9 =

Srie 62.2.3

33 + 2 = 33 + 1 = 33 + 4 = 33 + 6 = 33 + 5 =

33 + 3 = 33 + 0 = 33 + 7 = 33 + 8 = 33 + 9 =

Srie 62.2.4

20 + 3 = 40 + 2 = 30 + 1 = 10 + 4 = 50 + 3 =

20 + 2 = 10 + 1 = 30 + 4 = 40 + 3 = 50 + 2 =

Srie 62.2.5

18 1 = 16 1 = 14 1 = 12 1 = 10 1 =

11 1 = 13 1 = 15 1 = 17 1 = 19 1 =


N63N

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ata:

103


63.1.1. Digues dos nombres ms petits de:

30 , 41 , 23 , 10 .


21,

33,


13 i 23 23 i 33 43 i 23 13 i 33 43 i 53

63.1.4. Digues si els nombres segents estan situats ms a prop de 10 o de 20:

17 , 13 , 15 , 11 ,19 .

63.1.5. Digues el nombre anterior i el posterior de:

21 , 30 , 39 , 50 .

Estratgies de clcul

Srie 63.2.1

1 + 1 = 2 + 2 = 3 + 3 = 4 + 4 = 5 + 5 =

10 + 10 = 9 + 9 = 7 + 7 = 8 + 8 = 6 + 6 =

Srie 63.2.2

8 + 1 = 8 + 2 = 8 + 3 = 8 + 4 = 8 + 5 =

8 + 6 = 8 + 7 = 8 + 8 = 8 + 9 = 8 + 0 =

Srie 63.2.3

20 + 2 = 10 + 1 = 30 + 4 = 40 + 6 = 50 + 5 =

10 + 3 = 20 + 0 = 30 + 7 = 20 + 3 = 30 + 3 =

Srie 63.2.4

20 5 = 40 5 = 30 5 = 10 5 = 50 5 =

20 10 = 10 10 = 30 10 = 40 10 = 50 10 =

Srie 63.2.5

1 1 = 2 1 = 3 1 = 4 1 = 5 1 =

6 1 = 7 1 = 8 1 = 9 1 = 10 1 =


N64N

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104


64.1.1. Digues dos nombres ms grans de:

30 , 41 , 23 , 10 .

64.1.2. Compta de 50 a 0:

64.1.3. Digues quin dels nombres s ms gran:

14 i 41 25 i 52 13 i 31 23 i 32 43 i 34


26 , 24 , 21 , 29 ,19 .

64.1.5. Digues un nombre situat entre:

21 i 27 , 30 i 37 , 19 i 20 , 29 i 32 .

Estratgies de clcul

Srie 64.2.1

13 + 1 = 13 + 2 = 13 + 3 = 13 + 4 = 13 + 5 =

14 + 1 = 14 + 3 = 14 + 5 = 14 + 2 = 14 + 6 =

Srie 64.2.2

20 + 5 = 10 + 5 = 40 + 5 = 30 + 5 = 50 + 5 =

20 + 7 = 10 + 7 = 30 + 7 = 50 + 7 = 10 + 6 =

Srie 64.2.3

1 + 2 = 10 + 20 = 1 + 4 = 10 + 40 = 3 + 2 =

30 + 20 = 4 + 1 = 40 + 10 = 30 + 10 = 3 + 1 =

Srie 64.2.4

15 5 = 45 5 = 35 5 = 5 5 = 25 5 =

55 5 = 16 6 = 46 6 = 36 6 = 26 6 =

Srie 64.2.5

10 1 = 12 2 = 13 3 = 14 4 = 13 4 =

11 2 = 10 2 = 12 3 = 11 3 = 10 3 =


N65N

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105


65.1.1. Digues el nombre anterior i el posterior dels nombres:

20 , 40 , 50 , 30 .

65.1.2. Compta de dos en dos de 30 a 0.

65.1.3. Digues quin s el nombre ms gran entre:

14 i 24 35 i 45 23 i 33 44 i 54 12 i 22


32 , 31 , 34 , 33 ,36 .

65.1.5. Digues el doble de:

3 , 5 , 7 , 2 , 8 .

Estratgies de clcul

Srie 65.2.1

9 + 1 = 8 + 2 = 7 + 3 = 9 + 4 = 8 + 5 =

7 + 1 = 9 + 3 = 8 + 4 = 7 + 5 = 6 + 1 =

Srie 65.2.2

12 + 3 = 12 + 1 = 12 + 0 = 12 + 7 = 12 + 5 =

12 + 2 = 12 + 4 = 12 + 6 = 12 + 8 = 12 + 9 =

Srie 65.2.3

10 + 5 = 10 + 10 = 20 + 10 = 20 + 5 = 30 + 5 =

Srie 65.2.4

15 5 = 15 10 = 35 10 = 35 5 = 25 5 =

25 10 = 55 10 = 55 5 = 45 5 = 45 10 =

Srie 65.2.5

19 4 = 18 7 = 19 8 = 18 4 = 19 7 =

20 8 = 20 4 = 17 7 = 18 8 = 17 4 =


N66N

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106



17 , 27 , 39 , 49 .


66.1.3. Digues quin s el nombre ms petit entre els nombres:

15 i 25 33 i 43 24 i 34 43 i 53 19 i 29


49 , 43 , 48 , 44 ,47 .

66.1.5. Digues el triple de:

3 , 5 , 1 , 2 .

Estratgies de clcul

Srie 66.2.1

19 + 1 = 12 + 2 = 17 + 3 = 11 + 4 = 18 + 5 =

10 + 1 = 15 + 3 = 13 + 4 = 14 + 5 = 16 + 1 =

Srie 66.2.2

11 + 3 = 11 + 1 = 11 + 0 = 11 + 8 = 11 + 5 =

11 + 2 = 11 + 4 = 11 + 6 = 11 + 7 = 11 + 9 =

Srie 66.2.3

10 5 = 10 10 = 20 10 = 20 5 = 30 5 =

Srie 66.2.4

8 5 = 18 5 = 5 5 = 15 5 = 6 5 =

26 5 = 9 5 = 29 5 = 7 5 = 37 5 =

Srie 66.2.5

10 + 40 = 20 + 30 = 30 + 10 = 40 + 10 = 30 + 20 =

20 + 20 = 30 + 30 = 10 + 30 = 10 + 40 = 30 + 30 =


N67N

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107



21 , 50 , 59 , 40 .


67.1.3. Digues quin s el nombre ms gran entre els nombres:

25 i 35 43 i 48 34 i 54 56 i 53 41 i 29

67.1.4. Digues el nombre que hi ha entre:

45 i 47 , 36 i 38 , 24 i 26 , 49 i 51 , 31 i 33 .

67.1.5. Digues quina s la desena que tenen ms a prop els nombres:

33 , 59 , 18 , 42 , 51 .

Estratgies de clcul

Srie 67.2.1

39 + 10 = 22 + 10 = 17 + 10 = 21 + 10 = 38 + 10 =

40 + 10 = 35 + 10 = 23 + 10 = 44 + 10 = 36 + 10 =

Srie 67.2.2

5 + 3 = 15 + 3 = 5 + 5 = 15 + 5 = 5 + 2 =

15 + 2 = 5 + 4 = 15 + 4 = 5 + 6 = 15 + 6 =

Srie 67.2.3

52 2 = 56 2 = 53 2 = 59 2 = 58 2 =

60 2 = 55 2 = 54 2 = 50 2 = 40 2 =

Srie 67.2.4

18 + 5 = 28 + 5 = 15 + 5 = 25 + 5 = 16 + 5 =

26 + 5 = 19 + 5 = 29 + 5 = 17 + 5 = 27 + 5 =

Srie 67.2.5

10 + 45 = 25 + 30 = 30 + 15 = 40 + 10 = 35 + 20 =

20 + 20 = 30 + 35 = 15 + 30 = 10 + 40 = 10 + 35 =


N68N

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ata:

108


68.1.1. Digues el nombre posterior a:

31 , 57 , 48 , 19 .



45 i 55 33 i 37 24 i 13 16 i 27 51 i 39


52 i 54 , 27 i 29 , 30 i 32 , 58 i 60 , 36 i 38 .

68.1.5. Compta de tres en tres de 22 a 60.

Estratgies de clcul

Srie 68.2.1

9 + 6 = 2 + 6 = 7 + 6 = 1 + 6 = 3 + 6 =

4 + 6 = 5 + 6 = 0 + 6 = 8 + 6 = 6 + 6 =

Srie 68.2.2

6 + 4 = 16 + 4 = 4 + 3 = 14 + 3 = 1 + 5 =

11 + 5 = 2 + 2 = 12 + 2 = 7 + 1 = 17 + 1 =

Srie 68.2.3

34 3 = 44 4 = 23 3 = 29 8 = 60 1 =

49 7 = 56 5 = 23 2 = 25 5 = 35 5 =

Srie 68.2.4

12 + 4 = 14 + 4 = 18 + 4 = 14 + 4 = 17 + 4 =

24 + 4 = 17 + 4 = 28 + 4 = 16 + 4 = 36 + 4 =

Srie 68.2.5

22 + 5 = 12 + 3 = 33 + 5 = 40 + 1 = 46 + 2 =

32 + 2 = 30 + 5 = 15 + 3 = 12 + 4 = 14 + 5 =


N69N

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ata:

109



24 , 51 , 59 , 60 .

69.1.2. Compta de 37 a 57 de dos en dos.

69.1.3. Digues quin s el nombre ms gran entre els dos nombres:

35 i 60 23 i 48 56 i 59 37 i 45 32 i 23


52 i 54 , 27 i 29 , 30 i 32 , 58 i 60 , 36 i 38 .


28 , 33 , 46 , 53 , 19 .

Estratgies de clcul

Srie 69.2.1

5 + 5 = 10 + 10 = 15 + 15 = 20 + 20 = 25 + 25 =

10 + 5 = 5 + 20 = 10 + 20 = 5 + 15 = 10 + 15 =

Srie 69.2.2

12 + 4 = 22 + 4 = 32 + 4 = 42 + 5 = 52 + 5 =

13 + 5 = 23 + 4 = 33 + 4 = 43 + 3 = 53 + 3 =

Srie 69.2.3

50 9 = 40 9 = 30 9 = 20 9 = 10 9 =

50 7 = 40 7 = 30 7 = 30 6 = 20 6 =

Srie 69.2.4

6 + 2 = 6 + 4 = 6 + 3 = 6 + 0 = 6 + 1 =

6 + 9 = 6 + 5 = 6 + 7 = 6 + 6 = 6 + 8 =

Srie 69.2.5

12 + 5 = 12 + 3 = 13 + 5 = 10 + 1 = 16 + 2 =

12 + 4 = 10 + 5 = 15 + 3 = 12 + 4 = 14 + 5 =


N70N

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ata:

110



53 , 12 , 69 , 60 .



65 i 60 23 i 70 34 i 43 61 i 16 50 i 60


32 i 34 , 57 i 59 , 60 i 62 , 38 i 30 , 46 i 48 .

70.1.5. Digues quina s la desena ms propera a:

38 , 45 , 52 , 69 , 25 .

Estratgies de clcul

Srie 70.2.1

15 + 25 = 10 + 10 = 15 + 15 = 20 + 20 = 25 + 15 =

10 + 25 = 15 + 40 = 10 + 30 = 15 + 35 = 10 + 45 =

Srie 70.2.2

12 + 7 = 12 + 8 = 12 + 9 = 12 + 5 = 12 + 6 =

12 + 3 = 12 + 4 = 12 + 2 = 12 + 0 = 12 + 1 =

Srie 70.2.3

10 8 = 60 7 = 30 8 = 30 7 = 20 8 =

20 7 = 60 8 = 10 7 = 10 6 = 20 6 =

Srie 70.2.4

7 + 2 = 7 + 4 = 7 + 3 = 7 + 0 = 7 + 1 =

7 + 9 = 7 + 5 = 7 + 7 = 7 + 6 = 7 + 8 =

Srie 70.2.5

10 + 5 = 15 + 3 = 20 + 5 = 25 + 1 = 30 + 2 =

35 + 4 = 40 + 5 = 45 + 3 = 50 + 4 = 55 + 5 =


N71N

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ata:

111



62 , 12 , 52 , 32 .

71.1.2. Compta de dos en dos fins a 70 a partir de:

35,

45,

71.1.3. Tria el nombre ms petit entre:

16 o 61 41 o 14 63 o 36 25 o 52 62 o 26


20 , 10 , 30 .

71.1.5. Digues la meitat de:

40 , 60 , 80 .

Estratgies de clcul

Srie 71.2.1

1 + 1 = 2 + 2 = 3 + 3 = 4 + 4 = 5 + 5 =

61 + 1 = 62 + 2 = 63 + 3 = 64 + 4 = 65 + 5 =

Srie 71.2.2

60 + 1 = 60 + 2 = 60 + 3 = 60 + 4 = 60 + 5 =

60 + 6 = 60 + 7 = 60 + 8 = 60 + 9 = 60 + 10 =

Srie 71.2.3

13 + 2 = 63 + 2 = 15 + 2 = 65 + 2 = 18 +2 =

Srie 71.2.4

67 + 1 = 64 + 1 = 62 + 1 = 68 + 1 = 65 + 1 =

60 + 1 = 61 + 1 = 63 + 1 = 69 + 1 = 66 + 1 =

Srie 71.2.5

68 1 = 66 1 = 64 1 = 62 1 = 60 1 =

61 1 = 63 1 = 65 1 = 67 1 = 69 1 =


N72N

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ata:

112



71 , 61 , 63 , 61 .


64,

54,


65 i 15 35 i 45 45 i 65 65 i 35 35 i 55


31 o 35 66 o 36 69 o 49 37 o 53 45 o 35

72.1.5. Compta de 71 a 45:

Estratgies de clcul

Srie 72.6.1

51 + 1 = 61 + 6 = 61 + 3 = 51 + 4 = 31 + 5 =

41 + 1 = 61 + 6 = 11 + 3 = 61 + 4 = 31 + 5 =

Srie 72.6.2

61 + 1 = 68 + 2 = 66 + 3 = 64 + 4 = 66 + 5 =

61 + 6 = 63 + 7 = 62 + 8 = 61 + 9 = 62 + 9 =

Srie 72.6.3

53 + 6 = 53 + 1 = 53 + 4 = 53 + 6 = 53 + 5 =

53 + 3 = 53 + 2 = 53 + 7 = 53 + 8 = 53 + 9 =

Srie 72.6.4

61 + 3 = 41 + 6 = 31 + 1 = 11 + 4 = 51 + 3 =

61 + 6 = 11 + 1 = 31 + 4 = 41 + 3 = 51 + 6 =

Srie 72.6.5

28 1 = 26 1 = 24 1 = 26 1 = 21 1 =

20 1 = 23 1 = 25 1 = 27 1 = 29 1 =


N73N

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ata:

113


73.1.1. Digues dos nombres ms petits que:

70 , 11 , 43 , 60 .


31,

43,


63 i 26 24 i 42 45 i 54 43 i 34 63 i 36


27 , 23 , 25 , 21 ,29 .


31 , 40 , 69 , 60 .

Estratgies de clcul

Srie 73.2.1

1 + 1 = 2 + 2 = 3 + 3 = 4 + 4 = 5 + 5 =

10 + 10 = 20 + 20 = 30 + 30 = 11 + 11 = 15 + 15 =

Srie 73.2.2

58 + 1 = 58 + 2 = 58 + 3 = 58 + 4 = 58 + 5 =

58 + 6 = 58 + 7 = 58 + 8 = 58 + 0 = 58 + 9 =

Srie 73.2.3

60 + 2 = 50 + 1 = 20 + 4 = 30 + 6 = 50 + 5 =

60 + 3 = 40 + 0 = 60 + 7 = 60 + 4 = 50 + 4 =

Srie 73.2.4

60 5 = 40 5 = 70 5 = 20 5 = 50 5 =

20 10 = 40 10 = 60 10 = 40 10 = 70 10 =

Srie 73.2.5

61 1 = 62 1 = 63 1 = 64 1 = 65 1 =

66 1 = 67 1 = 68 1 = 69 1 = 70 1 =


N74N

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ata:

114


74.1.1. Digues dos nombres ms grans que:

40 , 50 , 60 , 65 .

74.1.2. Compta fins a 70 a partir de:

52,

61,


64 i 46 35 i 53 63 i 36 53 i 35 43 i 34


36 , 34 , 31 , 39 , 29 .


51 i 57 , 60 i 67 , 49 i 60 , 69 i 62 .

Estratgies de clcul

Srie 74.2.1

43 + 1 = 43 + 2 = 43 + 3 = 43 + 4 = 43 + 5 =

44 + 1 = 44 + 3 = 44 + 5 = 44 + 2 = 44 + 6 =

Srie 74.2.2

20 + 8 = 60 + 7 = 40 + 6 = 30 + 5 = 40 + 4 =

30 + 3 = 10 + 2 = 20 + 1 = 60 + 5 = 30 + 6 =

Srie 74.2.3

15 + 20 = 10 + 20 = 12 + 40 = 10 + 40 = 32 + 20 =

30 + 20 = 43 + 10 = 60 + 10 = 20 + 20 = 30 + 30 =

Srie 74.2.4

65 5 = 35 5 = 45 5 = 15 5 = 25 5 =

55 5 = 66 6 = 36 6 = 16 6 = 56 6 =

Srie 74.2.5

60 1 = 62 2 = 63 3 = 64 4 = 63 4 =

61 2 = 60 2 = 62 3 = 61 3 = 60 3 =


N75N

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ata:

115



60 , 50 , 70 , 10 .



64 i 46 45 i 54 63 i 36 54 i 64 42 i 32


42 , 41 , 44 , 43 , 46 .


30 , 25 , 10 , 20 .

Estratgies de clcul

Srie 75.2.1

69 + 1 = 68 + 2 = 67 + 3 = 69 + 4 = 68 + 5 =

67 + 1 = 69 + 3 = 68 + 4 = 67 + 5 = 66 + 1 =

Srie 75.2.2

22 + 3 = 22 + 1 = 22 + 0 = 22 + 7 = 22 + 5 =

22 + 2 = 22 + 4 = 22 + 6 = 22 + 8 = 22 + 9 =

Srie 75.2.3

10 + 15 = 40 + 10 = 30 + 10 = 20 + 15 = 30 + 15 =

30 + 10 = 60 + 10 = 25 + 15 = 15 + 20 = 40 + 15 =

Srie 75.2.4

65 5 = 25 10 = 65 10 = 55 5 = 45 5 =

70 10 = 55 10 = 25 5 = 35 5 = 40 10 =

Srie 75.2.5

29 4 = 28 7 = 29 8 = 28 4 = 29 7 =

30 8 = 30 4 = 27 7 = 28 8 = 27 4 =


N76N

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ata:

116



67 , 57 , 49 , 59 .



65 i 45 33 i 63 34 i 24 43 i 63 39 i 29


59 , 53 , 58 , 54 , 57 .


4 , 5 , 10 , 2 , 1 .

Estratgies de clcul

Srie 76.2.1

39 + 1 = 32 + 2 = 37 + 3 = 31 + 4 = 38 + 5 =

30 + 1 = 35 + 3 = 33 + 4 = 34 + 5 = 36 + 1 =

Srie 76.2.2

31 + 3 = 31 + 1 = 31 + 0 = 31 + 8 = 31 + 5 =

31 + 2 = 31 + 4 = 31 + 6 = 31 + 7 = 31 + 9 =

Srie 76.2.3

30 15 = 30 10 = 20 10 = 20 15 = 30 5 =

30 30 = 40 30 = 50 30 = 50 15 = 40 5 =

Srie 76.2.4

8 6 = 38 6 = 6 6 = 16 6 = 6 6 =

26 6 = 9 6 = 29 6 = 7 6 = 37 6 =

Srie 76.2.5

60 40 = 40 30 = 30 10 = 40 10 = 30 20 =

60 20 = 50 30 = 40 20 = 60 30 = 70 30 =


N77N

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ata:

117



61 , 50 , 69 , 70 .



65 i 56 46 i 68 45 i 54 62 i 26 41 i 14


65 i 67 , 56 i 58 , 54 i 56 , 69 i 61 , 51 i 53 .

77.1.5. Digues quina s la desena que tenen ms a prop els nombres:

63 , 69 , 58 , 52 , 61 .

Estratgies de clcul

Srie 77.2.1

39 + 20 = 22 + 20 = 37 + 20 = 21 + 20 = 38 + 20 =

40 + 20 = 35 + 20 = 23 + 20 = 44 + 20 = 36 + 20 =

Srie 77.2.2

25 + 3 = 15 + 3 = 25 + 5 = 15 + 5 = 25 + 2 =

15 + 2 = 25 + 4 = 15 + 4 = 25 + 6 = 15 + 6 =

Srie 77.2.3

62 2 = 66 2 = 63 2 = 69 2 = 68 2 =

70 2 = 65 2 = 64 2 = 68 8 = 68 4 =

Srie 77.2.4

28 + 4 = 18 + 4 = 15 + 4 = 25 + 4 = 16 + 4 =

26 + 4 = 19 + 4 = 29 + 4 = 17 + 4 = 37 + 4 =

Srie 77.2.5

30 15 = 45 20 = 30 15 = 70 20 = 45 20 =

30 15 = 40 10 = 25 15 = 50 15 = 40 35 =


N78N

om

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ata:

118


78.1.1. Digues el nombre que ve darrere del nombre:

51 , 67 , 58 , 69 .



65 i 65 43 i 47 34 i 23 26 i 37 61 i 49


62 i 64 , 47 i 49 , 50 i 52 , 68 i 70 , 56 i 58 .

78.1.5. Compta de 42 a 70 de tres en tres.

Estratgies de clcul

Srie 78.2.1

19 + 6 = 12 + 6 = 17 + 6 = 11 + 6 = 13 + 6 =

14 + 6 = 15 + 6 = 10 + 6 = 18 + 6 = 16 + 6 =

Srie 78.2.2

5 + 4 = 15 + 4 = 3 + 3 = 13 + 3 = 2 + 5 =

12 + 5 = 5 + 2 = 15 + 2 = 6 + 2 = 16 + 2 =

Srie 78.2.3

64 3 = 64 4 = 53 3 = 59 8 = 60 1 =

Srie 78.2.4

12 + 3 = 14 + 3 = 18 + 3 = 14 + 3 = 17 + 3 =

24 + 3 = 17 + 3 = 28 + 3 = 16 + 3 = 36 + 3 =

Srie 78.2.5

62 + 5 = 52 + 3 = 43 + 5 = 30 + 1 = 26 + 2 =

12 + 2 = 30 + 5 = 65 + 3 = 52 + 4 = 24 + 5 =


N79N

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ata:

119



64 , 61 , 49 , 50 .



45 i 70 33 i 58 66 i 69 57 i 55 62 i 63


62 i 64 , 37 i 39 , 40 i 42 , 68 i 70 , 46 i 48 .

79.1.5. Digues el nombre anterior i el posterior a:

68 , 63 , 56 , 53 , 69

Estratgies de clcul

Srie 79.2.1

15 + 15 = 10 + 10 = 10 + 15 = 20 + 20 = 25 + 15 =

20 + 15 = 15 + 20 = 10 + 20 = 15 + 25 = 25 + 15 =

Srie 79.2.2

12 + 5 = 22 + 5 = 32 + 5 = 42 + 6 = 52 + 6 =

13 + 6 = 23 + 3 = 33 + 3 = 43 + 7 = 53 + 7 =

Srie 79.2.3

50 8 = 40 8 = 60 8 = 20 8 = 60 6 =

50 6 = 40 6 = 30 6 = 10 8 = 20 6 =

Srie 79.2.4

60 + 2 = 60 + 4 = 60 + 3 = 60 + 0 = 60 + 1 =

60 + 9 = 60 + 5 = 60 + 7 = 60 + 6 = 60 + 8 =

Srie 79.2.5

14 + 5 = 14 + 3 = 12 + 5 = 12 + 1 = 18 + 2 =

18 + 4 = 11 + 5 = 11 + 3 = 13 + 4 = 13 + 5 =


N80N

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ata:

120



73 , 42 , 59 , 80 .



75 i 70 33 i 60 64 i 46 67 i 76 60 i 80


42 i 44 , 67 i 69 , 70 i 72 , 48 i 40 , 56 i 58 .


48 , 55 , 62 , 79 , 35 .

Estratgies de clcul

Srie 80.2.1

25 + 25 = 20 + 10 = 25 + 15 = 30 + 20 = 35 + 15 =

20 + 25 = 25 + 40 = 20 + 30 = 25 + 35 = 20 + 45 =

Srie 80.2.2

22 + 7 = 22 + 8 = 22 + 9 = 22 + 5 = 22 + 6 =

22 + 3 = 22 + 4 = 22 + 2 = 22 + 0 = 22 + 1 =

Srie 80.2.3

80 8 = 50 7 = 30 8 = 10 7 = 70 8 =

60 7 = 40 8 = 20 7 =

Srie 80.2.4

17 + 2 = 17 + 4 = 17 + 3 = 17 + 0 = 17 + 1 =

17 + 9 = 17 + 5 = 17 + 7 = 17 + 6 = 17 + 8 =

Srie 80.2.5

20 + 5 = 25 + 3 = 10 + 5 = 15 + 1 = 20 + 2 =

25 + 4 = 50 + 5 = 55 + 3 = 60 + 4 = 65 + 5 =


N81N

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ata:

121



72 , 62 , 42 , 52 .


65,

75,


76 o 67 51 o 15 73 o 37 35 o 53 73 o 37


10 , 30 , 40 .

81.1.5. Digues la meitat de :

80 , 40 , 20 .

Estratgies de clcul

Srie 81.2.1

5 + 5 = 65 + 5 = 4 + 4 = 64 + 4 = 3 + 3 =

63 + 3 = 1 + 1 = 61 + 1 = 2 + 2 = 62 + 2 =

Srie 81.2.2

71 + 1 = 71 + 2 = 71 + 3 = 71 + 4 = 71 + 5 =

71 + 6 = 71 + 7 = 71 + 8 = 71 + 9 = 71 + 0 =

Srie 81.2.3

13 + 5 = 63 + 5 = 15 + 5 = 65 + 5 = 18 + 5 =

68 + 5 = 15 + 5 = 65 + 5 = 64 + 5 = 38 + 5 =

Srie 81.2.4

77 + 2 = 74 + 2 = 72 + 2 = 78 + 2 = 75 + 2 =

70 + 2 = 71 + 2 = 73 + 2 = 79 + 2 = 76 + 2 =

Srie 81.2.5

68 2 = 66 2 = 64 2 = 62 2 = 60 2 =

61 2 = 63 2 = 65 2 = 67 2 = 69 2 =


N82N

om

: D

ata:

122



81 , 71 , 53 , 41 .

82.1.2. Compta de tres en tres a partir de:

64,

74,


75 i 75 65 i 65 55 i 65 65 i 75 25 i 45


41 o 45 56 o 35 39 o 59 47 o 33 45 o 25

82.1.5. Compta de 81 a 43 :

Estratgies de clcul

Srie 82.6.1

52 + 1 = 62 + 6 = 62 + 3 = 52 + 4 = 32 + 5 =

42 + 2 = 62 + 6 = 22 + 3 = 62 + 4 = 32 + 5 =

Srie 82.6.2

71 + 1 = 78 + 2 = 76 + 3 = 74 + 4 = 76 + 5 =

71 + 6 = 73 + 7 = 72 + 8 = 71 + 9 = 71 + 8 =

Srie 82.6.3

72 + 6 = 72 + 1 = 72 + 4 = 72 + 6 = 72 + 5 =

Srie 82.6.4

65 + 3 = 45 + 6 = 35 + 1 = 15 + 4 = 55 + 3 =

65 + 6 = 15 + 1 = 35 + 4 = 45 + 3 = 55 + 6 =

Srie 82.6.5

38 2 = 36 2 = 34 2 = 36 2 = 31 2 =

30 2 = 33 2 = 35 2 = 37 2 = 39 2 =


N83N

om

: D

ata:

123



80 , 21 , 53 , 70 .


51,

63,


73 i 76 74 i 46 55 i 34 23 i 35 67 i 76


37 , 33 , 35 , 31 ,39 .


61 , 70 , 59 , 70 .

Estratgies de clcul

Srie 83.2.1

21 + 1 = 22 + 2 = 23 + 3 = 24 + 4 = 25 + 5 =

21 + 10 = 22 + 20 = 23 + 30 = 24 + 40 = 25 + 50 =

Srie 83.2.2

62 + 1 = 62 + 2 = 62 + 3 = 62 + 4 = 62 + 5 =

62 + 6 = 62 + 7 = 62 + 8 = 62 + 0 = 62 + 9 =

Srie 83.2.3

50 + 20 = 50 + 10 = 20 + 40 = 10 + 60 = 50 + 30 =

40 + 30 = 40 + 10 = 60 + 20 = 10 + 50 = 30 + 20 =

Srie 83.2.4

40 5 = 20 5 = 30 5 = 10 5 = 20 5 =

40 10 = 20 10 = 50 10 = 30 10 = 60 10 =

Srie 83.2.5

60 2 = 62 2 = 63 2 = 64 2 = 65 2 =

66 2 = 67 2 = 68 2 = 69 2 = 70 2 =


N84N

om

: D

ata:

124



56 , 70 , 43 , 74 .


63,

47,


74 i 47 45 i 54 73 i 37 63 i 36 23 i 32


46 , 44 , 41 , 49 , 49 .


71 i 77 , 70 i 77 , 59 i 50 , 68 i 66 .

Estratgies de clcul

Srie 84.2.1

73 + 1 = 73 + 2 = 73 + 3 = 73 + 4 = 73 + 5 =

74 + 1 = 74 + 3 = 74 + 5 = 74 + 2 = 74 + 6 =

Srie 84.2.2

21 + 8 = 61 + 7 = 41 + 6 = 31 + 5 = 41 + 4 =

31 + 3 = 11 + 2 = 21 + 1 = 61 + 5 = 51 + 5 =

Srie 84.2.3

25 + 20 = 20 + 20 = 22 + 40 = 20 + 40 = 42 + 20 =

40 + 20 = 53 + 10 = 70 + 10 = 60 + 10 = 50 + 10 =

Srie 84.2.4

75 5 = 45 5 = 55 5 = 25 5 = 35 5 =

65 3 = 76 3 = 46 3 = 26 3 = 66 3 =

Srie 84.2.5

70 1 = 72 2 = 73 2 = 74 4 = 73 3 =

71 3 = 70 2 = 72 1 = 71 1 = 70 3 =


N85N

om

: D

ata:

125



80 , 60 , 40 , 20 .



74 i 47 65 i 56 63 i 36 64 i 46 72 i 27


52 , 51 , 54 , 53 , 56 .


20 , 40 , 10 , 30 .

Estratgies de clcul

Srie 85.2.1

79 + 1 = 78 + 2 = 77 + 3 = 79 + 4 = 78 + 5 =

77 + 1 = 79 + 3 = 78 + 4 = 77 + 5 = 76 + 1 =

Srie 85.2.2

33 + 3 = 33 + 1 = 33 + 0 = 33 + 7 = 33 + 5 =

33 + 2 = 33 + 4 = 33 + 6 = 33 + 8 = 33 + 9 =

Srie 85.2.3

20 + 15 = 50 + 10 = 40 + 10 = 30 + 10 = 40 + 15 =

50 + 10 = 70 + 10 = 30 + 15 = 25 + 10 = 35 + 15 =

Srie 85.2.4

75 5 = 35 10 = 75 10 = 65 5 = 55 5 =

80 10 = 65 10 = 35 5 = 45 5 = 50 10 =

Srie 85.2.5

39 4 = 38 7 = 39 8 = 38 4 = 39 7 =

40 8 = 40 4 = 37 7 = 38 8 = 37 4 =


N86N

om

: D

ata:

126



77 , 67 , 59 , 69 .


86.1.3. Digues quin s el nombre ms petit entre:

75 i 55 43 i 73 44 i 34 53 i 73 49 i 39


69 , 63 , 68 , 64 , 67 .


2 , 20 , 1 , 10 , 15 .

Estratgies de clcul

Srie 86.2.1

49 + 1 = 42 + 2 = 47 + 3 = 41 + 4 = 48 + 5 =

40 + 1 = 45 + 3 = 43 + 4 = 44 + 5 = 46 + 1 =

Srie 86.2.2

52 + 3 = 52 + 1 = 52 + 0 = 52 + 8 = 52 + 5 =

52 + 2 = 52 + 4 = 52 + 6 = 52 + 7 = 52 + 9 =

Srie 86.2.3

31 15 = 31 10 = 21 10 = 21 15 = 31 5 =

Srie 86.2.4

18 6 = 28 6 = 16 6 = 26 6 = 16 6 =

36 6 = 29 6 = 19 6 = 27 6 = 17 6 =

Srie 86.2.5

70 40 = 50 30 = 40 10 = 50 10 = 40 20 =

80 20 = 60 30 = 50 20 = 80 30 = 30 30 =


N87N

om

: D

ata:

127



71 , 60 , 79 , 80 .



75 i 57 56 i 65 65 i 56 72 i 27 51 i 15


75 i 77 , 66 i 68 , 64 i 66 , 79 i 71 , 61 i 63 .

87.1.5. Quina s la desena que tenen ms a prop els nombres:

73 , 79 , 68 , 62 , 71 .

Estratgies de clcul

Srie 87.2.1

49 + 30 = 32 + 30 = 47 + 30 = 31 + 30 = 78 + 30 =

60 + 30 = 45 + 30 = 63 + 30 = 54 + 30 = 66 + 30 =

Srie 87.2.2

35 + 3 = 25 + 3 = 35 + 5 = 25 + 5 = 35 + 2 =

25 + 2 = 35 + 4 = 25 + 4 = 35 + 6 = 25 + 6 =

Srie 87.2.3

74 3 = 75 3 = 77 3 = 79 3 = 78 3 =

80 3 = 75 3 = 74 3 = 64 3 = 65 3 =

Srie 87.2.4

38 + 2 = 28 + 2 = 25 + 2 = 35 + 2 = 26 + 2 =

36 + 2 = 11 + 2 = 31 + 2 = 74 + 2 = 34 + 2 =

Srie 87.2.5

40 5 = 55 10 = 40 5 = 80 10 = 55 10 =

40 5 = 50 10 = 35 5 = 60 5 = 50 5 =


N88N

om

: D

ata:

128


88.1.1. Digues el nombre que ve darrere de:

61 , 77 , 68 , 79 .



75 i 67 53 i 57 44 i 24 56 i 45 71 i 69


72 i 74 , 57 i 59 , 60 i 62 , 78 i 80 , 66 i 68 .

88.1.5. Compta de 52 a 80 de tres en tres.

Estratgies de clcul

Srie 88.2.1

29 + 5 = 22 + 5 = 27 + 5 = 21 + 5 = 23 + 5 =

24 + 5 = 25 + 5 = 20 + 5 = 28 + 5 = 26 + 5 =

Srie 88.2.2

5 + 5 = 15 + 5 = 3 + 4 = 13 + 4 = 2 + 6 =

12 + 6 = 5 + 3 = 15 + 3 = 5 + 3 = 16 + 3 =

Srie 88.2.3

74 3 = 74 4 = 73 3 = 69 8 = 70 1 =

79 7 = 76 5 = 63 2 = 73 2 = 53 2 =

Srie 88.2.4

12 + 4 = 14 + 4 = 18 + 4 = 14 + 4 = 17 + 4 =

24 + 4 = 17 + 4 = 28 + 4 = 16 + 4 = 36 + 4 =

Srie 88.2.5

72 + 5 = 62 + 4 = 53 + 5 = 40 + 1 = 36 + 2 =

22 + 2 = 40 + 5 = 75 + 4 = 62 + 4 = 34 + 5 =


N89N

om

: D

ata:

129



74 , 71 , 59 , 60 .



55 i 80 43 i 68 76 i 79 67 i 65 72 i 73


72 i 74 , 47 i 49 , 50 i 52 , 78 i 80 , 56 i 58 .


78 , 73 , 66 , 63 , 79 .

Estratgies de clcul

Srie 89.2.1

25 + 15 = 20 + 10 = 20 + 15 = 30 + 20 = 35 + 15 =

30 + 15 = 25 + 20 = 20 + 20 = 25 + 25 = 35 + 15 =

Srie 89.2.2

12 + 6 = 22 + 6 = 32 + 6 = 42 + 7 = 52 + 7 =

13 + 7 = 23 + 4 = 33 + 4 = 43 + 5 = 53 + 5 =

Srie 89.2.3

60 8 = 50 8 = 70 8 = 30 8 = 70 6 =

60 6 = 50 6 = 40 6 = 20 8 = 30 6 =

Srie 89.2.4

70 + 2 = 70 + 4 = 70 + 3 = 70 + 0 = 70 + 1 =

70 + 9 = 70 + 5 = 70 + 7 = 70 + 6 = 70 + 8 =

Srie 89.2.5

24 + 5 = 24 + 3 = 22 + 5 = 22 + 1 = 28 + 2 =

28 + 4 = 21 + 5 = 21 + 3 = 23 + 4 = 23 + 5 =


N90N

om

: D

ata:

130



83 , 52 , 69 , 80 .



85 i 80 43 i 70 74 i 47 78 i 87 70 i 80


52 i 54 , 77 i 79 , 80 i 82 , 58 i 50 , 66 i 68 .


58 , 65 , 72 , 89 , 45 .

Estratgies de clcul

Srie 90.2.1

35 + 25 = 30 + 10 = 35 + 15 = 40 + 20 = 45 + 15 =

30 + 25 = 35 + 40 = 30 + 30 = 35 + 35 = 30 + 45 =

Srie 90.2.2

11 + 7 = 11 + 8 = 11 + 9 = 11 + 5 = 11 + 6 =

11 + 3 = 11 + 4 = 11 + 2 = 11 + 0 = 11 + 1 =

Srie 90.2.3

90 8 = 60 7 = 40 8 = 20 7 = 80 8 =

70 7 = 50 8 = 30 7 = 20 6 = 70 6 =

Srie 90.2.4

19 + 2 = 19 + 4 = 19 + 3 = 19 + 0 = 19 + 1 =

19 + 9 = 19 + 5 = 19 + 7 = 19 + 6 = 19 + 8 =

Srie 90.2.5

30 + 5 = 35 + 3 = 20 + 5 = 25 + 1 = 30 + 2 =

35 + 4 = 60 + 5 = 65 + 3 = 70 + 4 = 75 + 5 =


N91N

om

: D

ata:

131


91.1.1. Digues el nombre que ve a continuaci de:

67 , 83 , 74 , 89 , 43 , 62 .

91.1.2. Quin dels dos nombres sacosta ms a 67:

62 o 65 63 o 68 65 o 67 64 o 68 69 o 67

91.1.3. Quin s el nombre segent de la srie numrica:

82, 84, 86, . 54, 55, 56, .

69, 68, 67, 66, . 73, 72, 71, .


77 , 88 , 66 , 55 , 22 , 89 .


72 , 73 , 85 , 87 , 94 , 98 .

Estratgies de clcul

Srie 91.2.1

73 + 1 = 75 + 0 = 77 + 2 = 72 + 1 = 74 + 2 =

83 + 1 = 85 + 0 = 87 + 2 = 82 + 1 = 84 + 2 =

Srie 91.2.2

5 + 40 = 4 + 71 = 6 + 82 = 2 + 73 = 3 + 94 =

2 + 72 = 1 + 91 = 2 + 85 = 4 + 92 = 6 + 82 =

Srie 91.2.3

86 3 = 75 3 = 64 3 = 53 3 = 49 3 =

36 3 = 25 3 = 24 3 = 13 3 = 99 3 =

Srie 91.2.4

8 + 71 = 6 + 71 = 7 + 70 = 5 + 73 = 3 + 72 =

2 + 72 = 1 + 71 = 5 + 75 = 3 + 72 = 5 + 73 =

Srie 91.2.5

89 8 = 56 6 = 73 2 = 87 5 = 64 3 =

95 1 = 88 5 = 99 6 = 77 5 = 66 6 =


N92N

om

: D

ata:

132



98 , 81 , 93 , 79 , 63 , 92 .

92.1.2. Quin s el nombre ms gran dentre:

91 i 95 88 i 83 77 i 74 62 i 65 56 i 59


84, 85, 86, . 52, 53, 54, .

77, 76, 75, . 99, 98, 97, 96, .


95 , 63 , 88 , 44 , 99 , 87 .

92.1.5. Digues si s ms petit o ms gran de 95:

97 , 94 , 91 , 96 , 93 , 98 .

Estratgies de clcul

Srie 92.2.1

95 + 2 = 86 + 2 = 97 + 2 = 88 + 2 = 72 + 2 =

85 + 2 = 76 + 2 = 67 + 2 = 98 + 2 = 82 + 2 =

Srie 92.2.2

3 + 90 = 4 + 91 = 1 + 92 = 2 + 83 = 6 + 84 =

4 + 85 = 1 + 76 = 2 + 77 = 2 + 97 = 1 + 68 =

Srie 92.2.3

99 1 = 82 2 = 96 1 = 75 2 = 74 1 =

89 1 = 92 2 = 86 1 = 85 2 = 84 1 =

Srie 92.2.4

4 + 91 = 5 + 81 = 4 + 90 = 5 + 70 = 4 + 62 =

5 + 92 = 4 + 71 = 5 + 61 = 4 + 52 = 5 + 82 =

Srie 92.2.5

96 1 = 87 2 = 94 3 = 88 1 = 76 2 =

87 3 = 55 1 = 77 3 = 55 1 = 85 2 =


N93N

om

: D

ata:

133


93.1.1. Digues quin nombre hi ha entre:

94 i 96 , 87 i 89 , 21 i 23 , 75 i 77 , 90 i 92 .

93.1.2. Digues del nombre que va davant i el que va darrere de:

97 , 85 , 78 , 99 , 79 .

93.1.3. Digues un nombre ms gran que:

94 , 93 , 77 , 89 , 70 , 99 .

93.1.4. Compta de 2 en 2 a partir de:

72,

84,

66,

93.1.5. Digues si aquests nombres sn ms a prop de 95 o de 100:

97 , 96 , 98 , 99 .

Estratgies de clcul

Srie 93.2.1

89 + 1 = 90 + 1 = 98 + 1 = 81 + 1 = 97 + 1 =

82 + 1 = 93 + 1 = 87 + 1 = 92 + 1 = 93 + 1 =

Srie 93.2.2

99 1 = 98 1 = 97 1 = 86 1 = 85 1 =

84 1 = 83 1 = 72 1 = 75 1 = 74 1 =

Srie 93.2.3

93 + 3 = 86 + 5 = 85 + 1 = 94 + 4 = 95 + 5 =

86 + 0 = 85 + 2 = 96 + 3 = 65 + 2 = 66 + 3 =

Srie 93.2.4

92 + 0 = 82 + 2 = 72 + 4 = 62 + 5 = 52 + 4 =

42 + 6 = 32 + 7 = 22 + 1 = 15 + 2 = 96 + 3 =

Srie 93.2.5

69 5 = 79 2 = 89 1 = 99 0 = 49 9 =

59 8 = 69 7 = 79 9 = 89 8 = 99 6 =


N94N

om

: D

ata:

134



94 i 96 , 87 i 89 , 91 i 93 , 85 i 87 , 90 i 92 .

94.1.2. Digues el nombre que va davant i el que va darrere de:

93 , 84 , 61 , 92 , 70 .


65 , 90 , 61 , 89 , 92 , 98 .


71,

83,

62,

94.1.5. Digues quin nombre va abans de:

92 , 70 , 98 , 64 .

Estratgies de clcul

Srie 94.2.1

98 + 2 = 86 + 4 = 97 + 2 = 80 + 2 = 97 + 3 =

85 + 5 = 99 + 1 = 87 + 3 = 95 + 5 = 89 + 1 =

Srie 94.2.2

79 2 = 88 3 = 97 2 = 76 3 = 85 2 =

94 3 = 74 3 = 83 3 = 93 3 = 72 2 =

Srie 94.2.3

82 + 2 = 84 + 4 = 91 + 1 = 96 + 2 = 75 + 5 =

70 + 0 = 96 + 4 = 93 + 3 = 66 + 4 = 63 + 3 =

Srie 94.2.4

91 + 0 = 91 + 2 = 91 + 4 = 91 + 5 = 93 + 4 =

93 + 6 = 93 + 7 = 93 + 1 = 93 + 7 = 93 + 1 =

Srie 94.2.5

69 5 = 79 2 = 89 1 = 99 0 = 59 9 =

49 8 = 39 7 = 29 8 = 69 7 = 59 6 =


N95N

om

: D

ata:

135



84 i 86 , 97 i 99 , 81 i 83 , 75 i 77 , 90 i 92 .


97 , 75 , 88 , 59 , 96 .


94 , 53 , 77 , 99 , 80 , 79 .


82,

64,

76,


87 , 86 , 88 , 89 .

Estratgies de clcul

Srie 95.2.1

99 + 1 = 60 + 1 = 38 + 1 = 11 + 1 = 57 + 1 =

82 + 1 = 73 + 1 = 97 + 1 = 92 + 1 = 63 + 1 =

Srie 95.2.2

99 1 = 78 1 = 57 1 = 36 1 = 15 1 =

84 1 = 63 1 = 42 1 = 23 1 = 92 1 =

Srie 95.2.3

83 + 3 = 86 + 5 = 95 + 1 = 94 + 4 = 75 + 5 =

76 + 0 = 65 + 2 = 66 + 3 = 55 + 2 = 56 + 3 =

Srie 95.2.4

12 + 0 = 22 + 2 = 32 + 4 = 42 + 5 = 42 + 4 =

52 + 6 = 52 + 7 = 52 + 1 = 92 + 6 = 92 + 7 =

Srie 95.2.5

99 5 = 89 2 = 99 1 = 89 0 = 99 9 =

99 8 = 79 7 = 79 6 = 69 8 = 69 7 =


N96N

om

: D

ata:

136


96.1.1. Tria el nombre que est ms a prop de 99:

98 o 91 91 o 94 94 o 90 93 o 97 90 o 96

96.1.2. Tria el nombre ms gran dentre:

80 i 83 93 i 97 61 i 66 85 i 83 65 i 66


62 , 51 , 43 , 80 , 74 , 95 .

96.1.4. Digues el nombre que ve desprs de:

92 , 89 , 70 , 68 , 56 , 43 .


62 , 50 , 72 , 84 .

Estratgies de clcul

Srie 96.2.1

78 + 2 = 84 + 6 = 67 + 3 = 80 + 0 = 65 + 5 =

36 + 3 = 37 + 3 = 80 + 0 = 85 + 5 = 96 + 3 =

Srie 96.2.2

86 + 4 = 75 4 = 82 + 4 = 83 + 4 = 95 4 =

94 + 3 = 81 + 4 = 85 4 = 74 + 3 = 71 + 4 =

Srie 96.2.3

97 + 3 = 77 + 5 = 67 + 1 = 57 + 4 = 47 + 5 =

37 + 0 = 27 + 2 = 17 + 7 = 87 + 0 = 77 + 2 =

Srie 96.2.4

70 + 0 = 92 + 2 = 63 + 4 = 94 + 4 = 85 + 5 =

31 + 4 = 56 + 6 = 33 + 2 = 67 + 7 = 81 + 1 =

Srie 96.2.5

90 5 = 90 2 = 90 1 = 90 0 = 90 9 =

80 8 = 80 7 = 80 6 = 90 7 = 90 6 =


N97N

om

: D

ata:

137



94 i 96 , 87 i 89 , 71 i 73 , 85 i 87 , 90 i 92 .


83 , 94 , 81 , 92 , 70 .


97 , 80 , 71 , 99 , 62 , 98 .


71,

85,

93,


92 , 100 , 84 , 98 .

Estratgies de clcul

Srie 97.2.1

98 + 2 = 86 + 4 = 77 + 2 = 80 + 2 = 97 + 3 =

85 + 5 = 79 + 1 = 56 + 3 = 34 + 5 = 77 + 1 =

Srie 97.2.2

79 2 = 88 3 = 97 2 = 56 3 = 65 2 =

74 3 = 93 3 = 92 2 = 85 2 = 94 3 =

Srie 97.2.3

92 + 2 = 74 + 4 = 91 + 1 = 86 + 3 = 65 + 5 =

80 + 5 = 76 + 3 = 73 + 3 = 50 + 7 = 96 + 3 =

Srie 97.2.4

82 + 1 = 82 + 2 = 82 + 4 = 82 + 5 = 42 + 4 =

42 + 6 = 42 + 7 = 72 + 1 = 92 + 2 = 92 + 4 =

Srie 97.2.5

90 5 = 70 2 = 80 1 = 60 0 = 50 9 =

40 8 = 30 7 = 20 6 = 80 7 = 50 6 =


N98N

om

: D

ata:

138



92 , 80 , 79 , 93 , 81 .


38,

35,


95 i 93 , 98 i 100 , 92 i 90 , 95 i 97 , 93 i 95 .


65,

63,

98.1.5. Digues quins daquests nombres sn ms a prop de 89:

82 o 80 88 o 84 87 o 84 86 o 86

Estratgies de clcul

Srie 98.2.1

88 + 0 = 86 + 6 = 87 + 2 = 80 + 4 = 87 + 2 =

85 + 6 = 84 + 1 = 80 + 3 = 87 + 4 = 85 + 5 =

Srie 98.2.2

98 3 = 89 2 = 97 2 = 86 3 = 94 3 =

82 2 = 95 2 = 83 3 = 92 2 = 85 2 =

Srie 98.2.3

86 + 6 = 51 + 1 = 56 + 6 = 93 + 3 = 92 + 2 =

80 + 5 = 94 + 4 = 95 + 5 = 72 + 2 = 60 + 8 =

Srie 98.2.4

95 + 5 = 95 + 2 = 85 + 4 = 85 + 5 = 72 + 4 =

75 + 6 = 92 + 5 = 95 + 1 = 52 + 4 = 55 + 6 =

Srie 98.2.5

94 3 = 82 2 = 92 1 = 62 4 = 75 3 =

52 2 = 72 1 = 52 2 = 42 1 = 92 2 =


N99N

om

: D

ata:

139



82 , 90 , 79 , 83 , 91 .


48,

41,

64,

99.1.3. Digues el nombre ms petit dentre:

94 i 98 92 i 96 93 i 95 95 i 98 93 i 96

99.1.4. Compta de 2 en 2 fins a 38 a partir de:

32, 28,

26,


32 o 36 31 o 34 37 o 33 36 o 34 31 o 34

Estratgies de clcul

Srie 99.2.1

93 + 7 = 42 + 6 = 43 + 2 = 54 + 4 = 55 + 2 =

96 + 4 = 47 + 1 = 83 + 2 = 84 + 4 = 95 + 2 =

Srie 99.2.2

84 3 = 76 2 = 90 2 = 68 3 = 97 3 =

80 2 = 99 2 = 70 2 = 59 2 = 99 3 =

Srie 99.2.3

81 + 6 = 61 + 1 = 41 + 7 = 21 + 3 = 31 + 2 =

51 + 5 = 71 + 4 = 91 + 5 = 11 + 2 = 81 + 8 =

Srie 99.2.4

97 + 1 = 97 + 2 = 87 + 3 = 87 + 2 = 87 + 1 =

Srie 99.2.5

95 3 = 85 2 = 75 1 = 65 4 = 94 3 =

74 2 = 64 1 = 44 4 = 64 3 = 54 2 =


N100N

om

: D

ata:

140



92 , 62 , 82 , 89 .

100.1.2. Compta de dos en dos a partir de 50:

35,

75,

65,

100.1.3. Tria el nombre ms petit dentre:

92 o 29 39 o 93 83 o 38 75 o 57 92 o 29


20 , 40 , 50 .

100.1.5. Digues la meitat de:

40 , 60 , 80 .

Estratgies de clcul

Srie 100.2.1

91 + 1 = 92 + 2 = 93 + 3 = 94 + 4 = 95 + 5 =

81 + 1 = 82 + 2 = 83 + 3 = 84 + 4 = 85 + 5 =

Srie 100.2.2

90 + 1 = 90 + 2 = 90 + 3 = 90 + 4 = 90 + 5 =

90 + 6 = 90 + 7 = 90 + 8 = 90 + 9 = 90 + 0 =

Srie 100.2.3

93 + 2 = 13 + 2 = 95 + 2 = 15 + 2 = 98 +2 =

18 + 2 = 95 + 2 = 15 + 2 =

Srie 100.2.4

87 + 1 = 94 + 1 = 72 + 1 = 58 + 1 = 95 + 1 =

60 + 1 = 71 + 1 = 93 + 1 = 99 + 1 = 76 + 1 =

Srie 100.2.5

98 1 = 76 1 = 64 1 = 82 1 = 90 1 =

71 1 = 93 1 = 85 1 = 67 1 = 99 1 =


N101N

om

: D

ata:

141


101.1.1. Digues un nombre ms petit que:

98 , 50 , 98 , 76 , 100 .


22,

16,

20,


84 i 88 82 i 86 81 i 85 85 i 88 83 i 86


75 , 85 , 68 , 100 .


86 , 94 , 57 , 99 .

Estratgies de clcul

Srie 101.2.1

91 + 1 = 92 + 1 = 83 + 1 = 94 + 1 = 93 + 1 =

84 + 1 = 95 + 1 = 76 + 1 = 77 + 1 =

Srie 101.2.2

101 1 = 102 1 = 103 1 = 104 1 = 105 1 =

106 1 = 107 1 = 103 2 = 104 2 = 105 2 =

Srie 101.2.3

56 + 5 = 51 + 5 = 57 + 5 = 53 + 5 = 52 + 5 =

58 + 5 = 55 + 5 = 54 + 5 = 59 + 5 = 50 + 5 =

Srie 101.2.4

107 + 0 = 105 + 2 = 103 + 4 = 101 + 5 = 107 + 4 =

105 + 6 = 103 + 7 = 101 + 1 = 102 + 5 = 107 + 1 =

Srie 101.2.5

60 3 = 80 2 = 70 1 = 10 4 = 40 3 =

50 2 = 60 1 = 90 0 = 70 2 = 30 7 =


N102N

om

: D

ata:

142



82 , 100 , 99 , 83 , 101 .

102.1.2. Compta de 100 a 75:


94 i 98 99 i 96 91 i 95 95 i 98 93 i 96


50,

95,


92 o 96 91 o 94 97 o 93 96 o 94 91 o 94

Estratgies de clcul

Srie 102.2.1

91 + 9 = 92 + 6 = 83 + 2 = 84 + 4 = 55 + 2 =

76 + 6 = 97 + 1 = 72 + 6 = 63 + 2 = 94 + 4 =

Srie 102.2.2

104 3 = 106 2 = 100 2 = 108 3 = 107 3 =

110 5 = 109 2 = 109 3 = 106 3 = 105 3 =

Srie 102.2.3

100 + 6 = 100 + 1 = 100 + 7 = 100 + 3 = 100 + 0 =

100 + 9 = 100 + 4 = 100 + 5 = 100 + 8 = 100 + 2 =

Srie 102.2.4

87 + 5 = 97 + 2 = 77 + 4 = 57 + 5 = 67 + 4 =

47 + 6 = 37 + 5 = 27 + 4 = 57 + 6 = 37 + 2 =

Srie 102.2.5

65 5 = 75 5 = 25 5 = 85 5 = 15 5 =

90 5 = 65 5 = 50 5 = 75 5 = 90 5 =


N103N

om

: D

ata:

143



102 , 103 , 99 , 100 , 77 .


99,

78,


95 i 93 , 98 i 90 , 92 i 94 , 95 i 97 , 93 i 95 .

103.1.4. Compta de 4 en 4 a partir:

75,

83,


82 o 80 98 o 84 77 o 93 86 o 90

Estratgies de clcul

Srie 103.2.1

108 + 2 = 106 + 6 = 107 + 2 = 100 + 4 = 107 + 4 =

105 + 6 = 104 + 1 = 106 + 3 = 107 + 3 = 100 + 9 =

Srie 103.2.2

98 3 = 79 2 = 97 2 = 86 3 = 74 3 =

92 2 = 75 2 = 93 3 = 85 2 = 63 3 =

Srie 103.2.3

106 + 4 = 101 + 7 = 106 + 5 = 103 + 3 = 102 + 2 =

100 + 1 = 104 + 4 = 105 + 5 = 104 + 6 = 105 + 5 =

Srie 103.2.4

75 + 2 = 85 + 2 = 75 + 4 = 85 + 4 = 75 + 2 =

85 + 2 = 75 + 5 = 85 + 5 = 75 + 3 = 85 + 3 =

Srie 103.2.5

99 3 = 89 2 = 99 6 = 99 4 = 89 3 =

99 2 = 99 1 = 99 7 = 89 7 = 99 9 =


N104N

om

: D

ata:

144



94 i 96 , 97 i 99 , 81 i 83 , 95 i 97 , 80 i 82 .


93 , 84 , 71 , 102 , 100 .


105 , 80 , 91 , 89 , 92 , 68 .


25,

45,

33,


92 , 100 , 98 , 104 .

Estratgies de clcul

Srie 104.2.1

98 + 2 = 86 + 4 = 77 + 2 = 60 + 2 = 67 + 3 =

75 + 5 = 89 + 1 = 97 + 3 = 95 + 5 = 89 + 1 =

Srie 104.2.2

109 2 = 108 3 = 107 2 = 106 3 = 105 2 =

104 3 = 103 3 = 102 2 = 107 3 = 100 2 =

Srie 104.2.3

102 + 2 = 104 + 4 = 101 + 1 = 106 + 6 = 105 + 5 =

104 + 4 = 101 + 1 = 100 + 0 = 106 + 6 = 103 + 3 =

Srie 104.2.4

81 + 3 = 91 + 2 = 81 + 4 = 91 + 5 = 81 + 4 =

91 + 6 = 81 + 7 = 91 + 1 = 81 + 4 = 91 + 8 =

Srie 104.2.5

11 5 = 21 2 = 31 1 = 21 3 = 41 2 =

11 4 = 31 7 = 11 9 = 91 5 = 81 5 =


N105N

om

: D

ata:

145



94 i 96 , 67 i 69 , 91 i 93 , 75 i 77 , 80 i 82 .


97 , 105 , 108 , 89 , 76 .


104 , 103 , 87 , 109 , 90 , 79 .


25,

30,

46,


87 , 76 , 98 , 101 .

Estratgies de clcul

Srie 105.2.1

109 + 1 = 100 + 1 = 108 + 1 = 111 + 1 = 117 + 1 =

112 + 1 = 103 + 1 = 117 + 1 = 112 + 1 = 103 + 1 =

Srie 105.2.2

109 1 = 118 1 = 107 1 = 116 1 = 105 1 =

114 1 = 103 1 = 112 1 = 115 1 = 104 1 =

Srie 105.2.3

113 + 3 = 106 + 5 = 115 + 1 = 114 + 4 = 115 + 5 =

106 + 0 = 105 + 2 = 116 + 3 = 116 + 4 = 112 + 5 =

Srie 105.2.4

92 + 8 = 12 + 2 = 72 + 4 = 92 + 5 = 62 + 4 =

52 + 6 = 32 + 7 = 92 + 1 = 92 + 2 = 62 + 6 =

Srie 105.2.5

109 5 = 119 2 = 119 1 = 109 8 = 109 9 =

119 8 = 119 7 = 119 8 = 119 7 = 109 6 =


N106N

om

: D

ata:

146


106.1.1. Tria el nombre que est ms a prop de 89:

98 o 81 91 o 94 94 o 80 83 o 97 90 o 86

106.1.2. Quan jo pari, continua:

101, 102, 103, 104,

121, 122, 123, 124, 125, 126, 127, 128, 129, 130,

131, 132, 133, 134,

141, 142, 143, 144, 145,

151, 152, 153, 154, 155,


122 , 121 , 123 , 120 , 124 , 125 .


122 , 119 , 130 , 128 , 116 , 123 .

106.1.5. Digues el nombre ms gran dentre:

96 i 90 85 i 88 74 i 73 85 i 87 90 i 98

Estratgies de clcul

Srie 106.2.1

118 + 2 = 114 + 6 = 127 + 3 = 120 + 5 = 125 + 5 =

116 + 3 = 117 + 3 = 122 + 4 = 125 + 5 = 136 + 3 =

Srie 106.2.2

126 + 4 = 125 4 = 142 + 4 = 123 + 4 = 115 4 =

Srie 106.2.3

97 + 3 = 87 + 5 = 77 + 1 = 67 + 4 = 57 + 5 =

47 + 0 = 57 + 2 = 17 + 7 = 27 + 2 = 37 + 7 =

Srie 106.2.4

20 + 20 = 50 + 30 = 10 + 40 = 20 + 40 = 20 + 50 =

30 + 40 = 10 + 60 = 23 + 20 = 20 + 70 = 50 + 10 =

Srie 106.2.5

10 5 = 20 2 = 30 1 = 40 0 = 50 9 =


N107N

om

: D

ata:

147


107.1.1. Tria el nombre ms gran dentre les parelles segents:

122 i 123 121 i 124 124 i 125 123 i 127 129 i 126

107.1.2. Quan jo pari, continua:

131, 132, 133,

141, 142, 143, 144,

121, 122, 123, 124, 125,

101, 102, 103, 104, 105, 106,


122 , 118 , 107 , 121 , 124 , 96 .

107.1.4. Compta cap amunt de 5 en 5 fins a 105 a partir de:

45,

67,

107.1.5. Digues un nombre ms petit que:

126 , 123 , 130 , 118 , 107 .

Estratgies de clcul

Srie 107.2.1

23 + 20 = 23 + 50 = 23 + 10 = 23 + 30 = 23 + 40 =

Srie 107.2.2

16 + 50 = 25 + 50 = 12 + 50 = 23 + 50 = 10 + 50 =

15 + 50 = 21 + 50 = 22 + 50 = 14 + 50 =

Srie 107.2.3

107 3 = 107 5 = 107 1 = 107 2 = 107 7 =

Srie 107.2.4

121 + 0 = 122 + 2 = 123 + 50 = 124 + 0 = 125 + 2 =

121 + 50 = 122 + 0 = 123 + 2 = 124 + 50 = 125 + 5 =

Srie 107.2.5

150 7 = 130 6 = 130 5 = 140 9 = 130 8 =

130 3 = 130 2 = 130 1 = 120 3 = 122 2 =


N108N

om

: D

ata:

148


108.1.1. Tria el nombre ms gran dentre les parelles segents:

122 i 123 121 i 124 124 i 125 123 i 127 129 i 126

108.1.2. Compta cap amunt a partir de:

113, 120,

121, 94,

116, 122,


121 , 109 , 127 , 130 , 103 , 125 .

108.1.4. Compta cap avall de 5 en 5 fins arribar a 90:

121, 120,

129, 123,

127, 125,


124 , 107 , 120 , 122 , 109 .

Estratgies de clcul

Srie 108.2.1

23 + 40 = 25 + 50 = 27 + 10 = 12 + 50 = 14 + 40 =

Srie 108.2.2

96 + 2 = 75 + 5 = 52 + 2 = 33 + 3 = 16 + 4 =

25 + 4 = 91 + 3 = 32 + 1 = 24 + 2 = 64 + 6 =

Srie 108.2.3

128 3 = 108 5 = 128 1 = 108 2 = 128 7 =

Srie 108.2.4

125 + 4 = 124 + 1 = 122 + 7 = 121 + 3 = 122 + 2 =

121 + 5 = 121 + 9 = 126 + 4 = 127 + 2 = 122 + 2 =

Srie 108.2.5

130 9 = 120 5 = 130 3 = 130 4 = 120 6 =

130 2 = 130 8 = 120 7 = 130 1 = 120 9 =


N109N

om

: D

ata:

149



122 o 129 130 o 126 126 o 123 123 o 127 128 o 136

109.1.2. Quin nombre ve a continuaci de:

125 , 129 , 127 , 120 , 123 , 126 .


128 , 126 , 125 , 120 , 127 , 124 .


125 i 122 120 i 128 126 i 129 129 i 128 127 i 123

109.1.5. Digues quin nombre va davant i quin darrere de:

102 , 124 , 129 , 109 , 108 .

Estratgies de clcul

Srie 109.2.1

30 + 21 = 50 + 22 = 70 + 22 = 20 + 21 = 40 + 22 =

60 + 23 = 10 + 22 = 50 + 21 = 20 + 22 = 30 + 23 =

Srie 109.2.2

60 + 24 = 50 + 21 = 20 + 28 = 30 + 24 = 60 + 21 =

50 + 25 = 10 + 21 = 20 + 21 = 30 + 22 = 10 + 24 =

Srie 109.2.3

129 3 = 109 5 = 139 1 = 149 2 = 129 5 =

119 3 = 129 5 = 139 1 = 159 2 = 139 5 =

Srie 109.2.4

60 + 24 = 20 + 21 = 30 + 27 = 40 + 23 = 30 + 22 =

50 + 25 = 10 + 29 = 40 + 24 = 80 + 22 = 30 + 23 =

Srie 109.2.5

108 8 = 128 6 = 128 2 = 108 5 = 128 3 =

128 1 = 128 5 = 108 8 = 128 4 = 108 6 =


N110N

om

: D

ata:

150



127 , 123 , 124 , 129 , 123 , 122 .


113 o 115 113 o 118 120 o 117 114 o 118 119 o 120


125, 126, 127, . 128, 129, .

120, 128, 127, . 127, 126, 125, .


129 , 120 , 117 , 124 , 118 , 122 .

110.1.5. Digues el nombre posterior de:

145 , 132 , 140 , 138 , 106 , 149 .

Estratgies de clcul

Srie 110.2.1

30 + 13 = 50 + 12 = 10 + 42 = 20 + 13 = 40 + 22 =

30 + 13 = 10 + 22 = 20 + 31 = 40 + 32 = 50 + 33 =

Srie 110.2.2

50 + 23 = 40 + 21 = 30 + 15 = 20 + 24 = 10 + 12 =

20 + 25 = 10 + 20 = 20 + 13 = 20 + 23 = 40 + 16 =

Srie 110.2.3

20 13 = 30 15 = 30 20 = 20 20 = 10 5 =

20 15 = 30 10 = 30 30 = 20 2 = 10 2 =

Srie 110.2.4

1 + 124 = 2 + 121 = 3 + 126 = 4 + 123 = 3 + 122 =

2 + 122 = 1 + 121 = 0 + 125 = 1 + 122 = 2 + 123 =

Srie 110.2.5

99 8 = 89 6 = 79 2 = 99 5 = 89 3 =

79 1 = 99 5 = 89 6 = 49 5 = 59 7 =


N111N

om

: D

ata:

151



162 , 112 , 152 , 132 .


125,

135,

145,


116 o 161 141 o 114 163 o 136 125 o 152 162 o 126

111.1.4. Quantes desenes hi ha en:

20 , 15 , 50 , 85 .

111.1.5. Digues la meitat de :

40 , 60 , 80 ,100 , 20 , 10 .

Estratgies de clcul

Srie 111.2.1

21 + 1 = 22 + 2 = 23 + 3 = 24 + 4 = 25 + 5 =

121 + 1 = 122 + 2 = 123 + 3 = 124 + 4 = 125 + 5 =

Srie 111.2.2

160 + 1 = 160 + 2 = 160 + 3 = 160 + 4 = 160 + 5 =

160 + 6 = 160 + 7 = 160 + 8 = 160 + 9 =

Srie 111.2.3

133 + 2 = 163 + 2 = 135 + 2 = 165 + 2 = 148 +2 =

168 + 2 = 175 + 2 = 185 + 2 =

Srie 111.2.4

167 + 1 = 144 + 1 = 162 + 1 = 158 + 1 = 165 + 1 =

180 + 1 = 171 + 1 = 163 + 1 = 149 + 1 = 166 + 1 =

Srie 111.2.5

168 1 = 156 1 = 144 1 = 132 1 = 120 1 =

161 1 = 173 1 = 135 1 = 167 1 = 129 1 =


N112N

om

: D

ata:

152



171 , 161 , 163 , 161 .

112.1.2. Compta de quatre en quatre fins a 171 a partir de:

164,

154,


165 i 115 135 i 145 145 i 165 165 i 135 135 i 155


131 o 135 166 o 136 169 o 149 137 o 153 145 o 135

112.1.5. Compta de 181 a 135 de 5 en 5 :

Estratgies de clcul

Srie 112.6.1

151 + 1 = 161 + 6 = 161 + 3 = 151 + 4 = 131 + 5 =

141 + 1 = 161 + 6 = 111 + 3 = 161 + 4 = 131 + 5 =

Srie 112.6.2

161 + 1 = 168 + 2 = 166 + 3 = 164 + 4 = 166 + 5 =

161 + 6 = 163 + 7 = 162 + 8 = 161 + 9 = 163 + 0 =

Srie 112.6.3

153 + 6 = 153 + 1 = 153 + 4 = 153 + 6 = 153 + 5 =

153 + 3 = 153 + 1 = 153 + 7 =

Srie 112.6.4

161 + 3 = 141 + 6 = 131 + 1 = 111 + 4 = 151 + 3 =

161 + 6 = 111 + 1 = 131 + 4 = 141 + 3 = 151 + 6 =

Srie 112.6.5

128 1 = 126 1 = 124 1 = 126 1 = 121 1 =

120 1 = 123 1 = 125 1 = 127 1 = 129 1 =


N113N

om

: D

ata:

153



70 , 111 , 143 , 160 .

113.1.2. Compta de quatre en quatre fins a 150 a partir de:

122,

131,

143,


163 i 126 124 i 142 145 i 154 143 i 134 163 i 136


127 , 123 , 125 , 121 ,129 .


131 , 140 , 169 , 160 .

Estratgies de clcul

Srie 113.2.1

71 + 1 = 72 + 2 = 73 + 3 = 74 + 4 = 75 + 5 =

171 + 1 = 172 + 2 = 173 + 3 = 174 + 4 = 175 + 5 =

Srie 113.2.2

158 + 1 = 158 + 2 = 158 + 3 = 158 + 4 = 158 + 5 =

158 + 6 = 158 + 7 = 158 + 8 = 158 + 0 = 158 + 9 =

Srie 113.2.3

60 + 20 = 50 + 10 = 20 + 40 = 30 + 60 = 50 + 50 =

60 + 30 = 40 + 10 = 60 + 40 = 20 + 20 = 40 + 40 =

Srie 113.2.4

60 50 = 80 50 = 70 50 = 90 50 = 50 30 =

20 20 = 40 20 = 60 30 = 40 30 = 70 30 =

Srie 113.2.5

61 10 = 62 20 = 63 10 = 64 20 = 65 10 =

66 20 = 67 10 = 68 20 = 69 10 = 70 20 =


N114N

om

: D

ata:

154



140 , 150 , 160 , 165 .


143,

152,

161,

137,


164 i 146 135 i 153 163 i 136 153 i 135 143 i 134


136 , 134 , 131 , 139 , 129 .


151 i 157 , 160 i 167 , 149 i 160 , 169 i 162 .

Estratgies de clcul

Srie 114.2.1

143 + 1 = 143 + 2 = 143 + 3 = 143 + 4 = 143 + 5 =

144 + 1 = 144 + 3 = 144 + 5 = 144 + 2 = 144 + 6 =

Srie 114.2.2

120 + 8 = 160 + 7 = 140 + 6 = 130 + 5 = 140 + 4 =

Srie 114.2.3

115 + 20 = 110 + 20 = 112 + 40 = 110 + 40 = 132 + 20 =

130 + 20 = 143 + 10 = 160 + 10 =

Srie 114.2.4

165 50 = 135 50 = 145 50 = 115 50 = 125 50 =

155 50 = 166 60 = 136 60 = 116 60 = 156 60 =

Srie 114.2.5

160 10 = 162 20 = 163 30 = 164 40 = 163 40 =

161 20 = 160 20 = 162 30 = 161 30 = 160 30 =


N115N

om

: D

ata:

155



60 , 150 , 170 , 110 .


115.1.3. Digues quin s el nombre ms gran dentre:

164 i 146 145 i 154 163 i 136 154 i 164 142 i 132


142 , 141 , 144 , 143 , 146 .


130 , 125 , 110 , 120 .

Estratgies de clcul

Srie 115.2.1

169 + 10 = 168 + 20 = 167 + 30 = 169 + 40 = 168 + 50 =

167 + 10 = 169 + 30 = 168 + 40 = 167 + 50 = 166 + 10 =

Srie 115.2.2

122 + 30 = 122 + 10 = 122 + 20 = 122 + 70 = 122 + 50 =

Srie 115.2.3

110 + 15 = 140 + 10 = 130 + 10 = 120 + 15 = 130 + 15 =

130 + 10 = 160 + 10 = 120 + 15 = 120 + 10 = 140 + 5 =

Srie 115.2.4

165 25 = 125 10 = 165 10 = 155 25 = 145 25 =

170 10 = 155 10 = 125 25 = 135 25 = 140 10 =

Srie 115.2.5

129 4 = 128 7 = 129 8 = 128 4 = 129 7 =

130 8 = 130 4 = 127 7 = 128 8 = 127 4 =


N116N

om

: D

ata:

156



267 , 257 , 249 , 259 .

116.1.2. Compta de cinc en cinc de 230 a 270.

116.1.3. Digues quin s el nombre ms petit entre:

265 i 245 233 i 263 234 i 224 243 i 263 239 i 229


259 , 253 , 258 , 254 , 257 .


40 , 50 , 20 , 30 , 15, .

Estratgies de clcul

Srie 116.2.1

239 + 1 = 232 + 2 = 237 + 3 = 231 + 4 = 238 + 5 =

230 + 1 = 235 + 3 = 233 + 4 = 234 + 5 = 236 + 1 =

Srie 116.2.2

231 + 30 = 231 + 10 = 231 + 20 = 231 + 8 = 231 + 5 =

231 + 50 = 231 + 4 = 231 + 60 = 231 + 7 = 231 + 2 =

Srie 116.2.3

230 15 = 230 10 = 220 10 = 220 15 = 230 5 =

230 30 = 240 30 = 230 20 = 230 25 = 240 5 =

Srie 116.2.4

258 6 = 238 6 = 256 6 = 216 6 = 206 6 =

276 6 = 219 6 = 229 6 = 117 6 = 137 6 =

Srie 116.2.5

260 40 = 240 30 = 230 10 = 240 10 = 230 20 =

260 20 = 250 30 = 240 20 = 260 30 = 270 30 =


N117N

om

: D

ata:

157



261 , 250 , 269 , 270 .

117.1.2. Compta de deu en deu de 269 a 220.


265 i 256 246 i 268 245 i 254 262 i 226 241 i 214


265 i 267 , 256 i 258 , 254 i 256 , 269 i 271 .

117.1.5. Digues la desena que tenen ms a prop els nombres:

163 , 269 , 58 , 152 , 261 .

Estratgies de clcul

Srie 117.2.1

139 + 20 = 222 + 20 = 137 + 20 = 121 + 20 = 238 + 20 =

140 + 20 = 135 + 20 = 223 + 20 = 144 + 20 = 136 + 20 =

Srie 117.2.2

125 + 3 = 215 + 3 = 225 + 5 = 115 + 5 = 125 + 2 =

215 + 2 = 125 + 4 = 215 + 4 = 125 + 6 = 215 + 6 =

Srie 117.2.3

262 2 = 266 2 = 163 2 = 169 2 = 268 2 =

270 2 = 165 2 = 164 2 = 264 2 = 260 2 =

Srie 117.2.4

228 + 4 = 218 + 4 = 115 + 4 = 125 + 4 = 216 + 4 =

226 + 4 = 119 + 4 = 129 + 4 = 217 + 4 = 237 + 4 =

Srie 117.2.5

230 15 = 245 20 = 230 15 = 270 20 = 245 20 =

230 15 = 240 10 = 225 15 = 250 15 = 240 35 =


N118N

om

: D

ata:

158


118.1.1. Digues el nombre que ve darrere de:

351 , 567 , 658 , 769 .

118.1.2. Compta de tres en tres de 269 a 239.

118.1.3. Digues quin s el nombre ms petit dentre:

165 i 265 243 i 347 134 i 123 526 i 237 861 i 149


862 i 864 , 147 i 149 , 250 i 252 , 468 i 470 .

118.1.5. Compta de 140 a 700 de deu en deu.

Estratgies de clcul

Srie 118.2.1

419 + 6 = 312 + 6 = 217 + 6 = 111 + 6 = 513 + 6 =

514 + 6 = 515 + 6 = 410 + 6 = 218 + 6 = 216 + 6 =

Srie 118.2.2

15 + 4 = 115 + 4 = 13 + 3 = 113 + 3 = 12 + 5 =

112 + 5 = 15 + 2 = 115 + 2 = 16 + 2 = 116 + 2 =

Srie 118.2.3

164 3 = 264 4 = 353 3 = 159 8 = 660 1 =

Srie 118.2.4

512 + 3 = 514 + 3 = 518 + 3 = 514 + 3 = 517 + 3 =

524 + 3 = 517 + 3 = 528 + 3 = 516 + 3 = 536 + 3 =

Srie 118.2.5

262 + 5 = 522 + 3 = 243 + 5 = 530 + 1 = 226 + 2 =

312 + 2 = 530 + 5 = 165 + 3 = 352 + 4 = 524 + 5 =


N119N

om

: D

ata:

159



564 , 561 , 549 , 550 .

119.1.2. Compta de deu en deu de 137 a 267.


845 i 870 133 i 158 266 i 269 357 i 355 562 i 563


262 i 264 , 537 i 539 , 240 i 242 , 668 i 670 .


268 , 363 , 456 , 553 , 769 .

Estratgies de clcul

Srie 119.2.1

115 + 15 = 110 + 10 = 110 + 15 = 120 + 20 = 125 + 15 =

120 + 15 = 115 + 20 = 110 + 20 = 115 + 25 = 125 + 15 =

Srie 119.2.2

502 + 5 = 402 + 5 = 102 + 5 = 402 + 6 = 502 + 6 =

103 + 6 = 203 + 3 = 303 + 3 = 403 + 7 = 503 + 7 =

Srie 119.2.3

500 8 = 400 8 = 600 8 = 200 8 = 600 6 =

500 6 = 400 6 = 300 6 = 100 6 = 300 8 =

Srie 119.2.4

600 + 2 = 600 + 4 = 600 + 3 = 600 + 0 = 600 + 1 =

600 + 9 = 600 + 5 = 600 + 7 = 600 + 6 = 600 + 8 =

Srie 119.2.5

714 + 5 = 714 + 3 = 712 + 5 = 712 + 1 = 718 + 2 =

718 + 4 = 711 + 5 = 711 + 3 = 713 + 4 = 713 + 5 =


N120N

om

: D

ata:

160



373 , 342 , 459 , 880 .

120.1.2. Compta de cinc en cinc de 126 a 196.


275 i 270 433 i 260 964 i 846 567 i 576 160 i 180


542 i 544 , 667 i 669 , 770 i 772 , 448 i 440 .

120.1.5. Digues quina s la centena ms propera a:

848 , 655 , 762 , 179 , 935 .

Estratgies de clcul

Srie 120.2.1

925 + 25 = 920 + 10 = 825 + 15 = 830 + 20 = 835 + 15 =

820 + 25 = 625 + 40 = 620 + 30 = 625 + 35 = 520 + 45 =

Srie 120.2.2

222 + 7 = 222 + 8 = 222 + 9 = 222 + 5 = 222 + 6 =

222 + 3 = 222 + 4 = 222 + 2 = 222 + 0 = 222 + 1 =

Srie 120.2.3

800 80 = 500 70 = 300 80 = 100 70 = 700 80 =

600 70 = 400 80 = 900 70 = 800 70 = 600 80 =

Srie 120.2.4

107 + 2 = 107 + 4 = 107 + 3 = 107 + 0 = 107 + 1 =

107 + 9 = 107 + 5 = 107 + 7 = 107 + 6 = 107 + 8 =

Srie 120.2.5

120 + 5 = 125 + 3 = 210 + 5 = 115 + 1 = 120 + 2 =

125 + 4 = 550 + 5 = 455 + 3 = 260 + 4 = 165 + 5 =

Clcul analtic

N121N

om

: D

ata:

38



19 , 99 , 22 , 100 , 999 .

121.1.2. Fes la meitat de:

18 , 8 , 24 , 82 , 68 .


113 i 131 123 i 122 143 i 123 113 i 122 143 i 153

121.1.4. Digues el nombre ms a prop de 100.

111 o 115 116 o 112 109 o 129 117 o 113 105 o 115


18 , 8 , 24 , 82 , 68 .

Estratgies de clcul

Srie 121.2.1

150 + 3 = 140 + 5 = 130 + 8 =

120 + 9 = 110 + 8 =

Srie 121.2.2

112 + 5 = 110 + 6 = 113 + 7 =

112 + 8 = 111 + 9 =

Srie 121.2.3

122 + 5 = 122 + 3 = 122 + 9 =

122 + 7 = 122 + 8 =

Srie 121.2.4

120 + 4 = 110 + 5 = 130 + 6 =

140 + 7 = 150 + 5 =

Srie 121.2.5

111 2 = 113 2 = 115 2 =

117 2 = 119 2 =

EDITORIAL TEIDEEDITORIAL TEIDE

ProjectePolar

MatemtiquesEDITORIAL TEIDEEDITORIAL TEIDE

ProjectePolar

Matemtiques

Clcul analtic

N122N

om

: D

ata:

39



16 , 31 , 93 , 99 , 111 .

122.1.2. Multiplica cada nombre per 10.

18 , 42 , 62 , 68 , 12 .


115 i 125 125 i 135 145 i 125 115 i 135 145 i 155


210 o 250 160 o 220 190 o 390 270 o 230 105 o 250


18 , 42 , 62 , 68 , 12 .

Estratgies de clcul

Srie 122.2.1

150 + 1 = 140 + 2 = 130 + 3 =

120 + 4 = 110 + 5 =

Srie 122.2.2

122 + 5 = 120 + 6 = 123 + 7 =

122 + 8 = 121 + 9 =

Srie 122.2.3

133 + 6 = 133 + 5 = 133 + 3 =

133 + 0 = 133 + 7 =

Srie 122.2.4

120 + 2 = 110 + 1 = 130 + 4 =

140 + 3 = 150 + 2 =

Srie 122.2.5

111 1 = 113 1 = 115 1 =

117 1 = 119 1 =


ProjectePolar


ProjectePolar

Matemtiques

Clcul analtic

N123N

om

: D

ata:

40


123.1.1. Suma 5 a cada nombre.

9 , 4 , 12 , 41 , 34 .


24 , 48 , 14 , 26 , 28 .


113 i 123 123 i 133 143 i 123 113 i 133 143 i 153

123.1.4. Quina s la desena ms propera?

19 , 99 , 22 , 10 , 82 .


121 , 130 , 139 , 150 .

Estratgies de clcul

Srie 123.2.1

15 + 5 = 19 + 9 = 17 + 7 =

18 + 8 = 16 + 6 =

Srie 123.2.2

58 + 5 = 58 + 6 = 58 + 7 =

58 + 8 = 58 + 2 =

Srie 123.2.3

140 + 6 = 150 + 5 = 110 + 3 =

120 + 0 = 130 + 7 =

Srie 123.2.4

120 10 = 110 10 = 130 10 =

140 10 = 150 10 =

Srie 123.2.5

600 1 = 700 1 = 800 1 =

900 1 = 100 1 =


ProjectePolar


ProjectePolar

Matemtiques

Clcul analtic

N124N

om

: D

ata:

41



16 , 31 , 93 , 99 , 11 .


9 , 4 , 12 , 41 , 34 .


114 i 141 125 i 152 113 i 131 123 i 132 143 i 134


260 , 240 , 210 , 290 , 190 .


25 i 27 , 30 i 32 , 18 i 20 , 29 i 31 .

Estratgies de clcul

Srie 124.2.1

114 + 1 = 114 + 3 = 114 + 5 =

114 + 2 = 114 + 6 =

Srie 124.2.2

150 + 5 = 120 + 7 = 110 + 7 =

130 + 7 = 150 + 7 =

Srie 124.2.3

40 + 40 = 31 + 2 = 30 + 20 =

41 + 1 = 40 + 10 =

Srie 124.2.4

155 5 = 116 6 = 146 6 =

136 6 = 126 6 =

Srie 124.2.5

111 2 = 110 2 = 112 3 =

111 3 = 110 3 =


ProjectePolar


ProjectePolar

Matemtiques

EDITORIAL TEIDE

ProjectePolar

Clcul analtic

N125N

om

: D

ata:

42



23 , 96 , 112 , 214 , 396 .

125.1.2. Compta cap enrere de dos en dos fins arribar a zero.

30 .


114 i 214 135 i 145 123 i 133 144 i 154 112 i 122


42 , 51 , 64 , 73 , 86 .


9 , 4 , 12 , 41 , 34 .

Estratgies de clcul

Srie 125.2.1

67 + 1 = 69 + 3 = 68 + 4 =

67 + 5 = 66 + 1 =

Srie 125.2.2

122 + 5 = 122 + 2 = 122 + 4 =

122 + 6 = 122 + 7 =

Srie 125.2.3

120 + 5 = 130 + 5 = 130 + 10 =

140 + 10 = 140 + 5 =

Srie 125.2.4

125 10 = 155 10 = 155 5 =

145 5 = 145 10 =

Srie 125.2.5

120 8 = 120 4 = 117 7 =

118 8 = 117 4 =


ProjectePolar

Matemtiques

EDITORIAL TEIDE

ProjectePolar

Clcul analtic

N126N

om

: D

ata:

43



117 , 127 , 39 , 419 .


9 , 21 , 31 , 34 , 6 .


115 i 125 133 i 143 124 i 134 143 i 153 119 i 129


490 , 430 , 480 , 440 , 470 .


30 , 50 , 10 , 20 .

Estratgies de clcul

Srie 126.2.1

110 + 1 = 115 + 3 = 113 + 4 =

114 + 5 = 116 + 1 =

Srie 126.2.2

111 + 5 = 111 + 2 = 111 + 4 =

111 + 6 = 111 + 7 =

Srie 126.2.3

120 5 = 130 5 = 130 10 =

140 10 = 140 5 =

Srie 126.2.4

16 5 = 9 5 = 39 5 =

17 5 = 327 5 =

Srie 126.2.5

200 + 200= 300 + 300 = 100 + 300 =

100 + 400 = 300 + 300 =


ProjectePolar

Matemtiques

EDITORIAL TEIDE

ProjectePolar

Clcul analtic

N127N

om

: D

ata:

44



27 , 43 , 58 , 93 , 456 .


12 , 24 , 7 , 13 , 14 .


125 i 135 143 i 148 134 i 154 156 i 153 141 i 129


145 i 147 , 136 i 138 , 124 i 126 , 149 i 151 ,

131 i 133 .

127.1.5. Quina s la desena ms a prop daquests nombres:

23 , 96 , 12 , 21 , 36 .

Estratgies de clcul

Srie 127.2.1

140 + 100 = 135 + 100 = 123 + 100 =

144 + 100 = 136 + 100 =

Srie 127.2.2

15 + 2 = 25 + 4 = 15 + 4 =

25 + 6 = 15 + 6 =

Srie 127.2.3

159 2 = 158 2 = 160 2 =

155 2 = 154 2 =

Srie 127.2.4

126 + 5 = 119 + 5 = 129 + 5 =

117 + 5 = 137 + 5 =

Srie 127.2.5

120 + 20 = 130 + 35 = 115 + 30 =

110 + 40 = 110 + 35 =


ProjectePolar

Matemtiques

EDITORIAL TEIDE

ProjectePolar

Clcul analtic

N128N

om

: D

ata:

45


128.1.1. Digues quin nombre ve a continuaci de:

18 , 23 , 52 , 97 , 222 .

128.1.2. Multiplica cada nombre per 10.

24 , 48 , 14 , 26 , 28 .


145 i 155 133 i 137 124 i 113 116 i 127 151 i 139


152 i 154 , 127 i 129 , 130 i 132 , 158 i 160 ,

136 i 138 .

128.1.5. Fes el doble de:

9 , 21 , 31 , 34 , 6 .

Estratgies de clcul

Srie 128.2.1

24 + 6 = 25 + 6 = 20 + 6 =

28 + 6 = 26 + 6 =

Srie 128.2.2

11 + 5 = 32 + 2 = 12 + 2 =

37 + 1 = 17 + 1 =

Srie 128.2.3

129 8 = 160 1 = 149 7 =

156 5 = 123 2 =

Srie 128.2.4

240 + 40 = 110 + 40 = 280 + 40 =

160 + 40 = 360 + 40 =

Srie 128.2.5

32 + 2 = 30 + 5 = 15 + 3 =

22 + 4 = 14 + 5 =


ProjectePolar

Matemtiques

EDITORIAL TEIDE

ProjectePolar

Clcul analtic

N129N

om

: D

ata:

46



86 , 29 , 91 , 147 , 235 .


12 , 24 , 7 , 13 , 14 .


135 i 160 123 i 148 156 i 159 137 i 145 132 i 123


152 i 154 , 127 i 129 , 130 i 132 , 158 i 160 ,

136 i 138 .

129.1.5. Digues el nombre anterior i posterior a:

128 , 133 , 146 , 153 ,

119 .

Estratgies de clcul

Srie 129.2.1

10 + 25 = 35 + 20 = 10 + 20 =

25 + 15 = 10 + 15 =

Srie 129.2.2

113 + 5 = 123 + 4 = 133 + 4 =

143 + 3 = 153 + 3 =

Srie 129.2.3

200 90 = 100 90 = 500 70 =

400 70 = 300 70 =

Srie 129.2.4

26 + 9 = 26 + 5 = 26 + 7 =

26 + 6 = 26 + 8 =

Srie 129.2.5

32 + 4 = 30 + 5 = 35 + 3 =

32 + 4 = 34 + 5 =


ProjectePolar

Matemtiques

EDITORIAL TEIDE

ProjectePolar

Clcul analtic

N130N

om

: D

ata:

47



23 , 231 , 923 , 299 , 211 .


28 , 44 , 68 , 64 , 46 .


165 i 160 123 i 132 134 i 143 161 i 116 150 i 160


132 i 134 , 157 i 159 , 160 i 162 , 138 i 130 ,

146 i 148 .


27 , 43 , 58 , 93 , 56 .

Estratgies de clcul

Srie 130.2.1

110 + 25 = 115 + 40 = 110 + 30 =

115 + 35 = 110 + 45 =

Srie 130.2.2

112 + 6 = 112 + 3 = 112 + 4 =

112 + 0 = 112 + 1 =

Srie 130.2.3

300 80 = 200 80= 200 70 =

600 80 = 100 70 =

Srie 130.2.4

27 + 9 = 27 + 5 = 27 + 7 =

27 + 6 = 27 + 8 =

Srie 130.2.5

135 + 4 = 140 + 5 = 145 + 3 =

150 + 4 = 155 + 5 =


ProjectePolar

Matemtiques

Clcul analtic

N131N

om

: D

ata:

48



37 , 289 , 871 , 723 ,

, 324 .


14 , 22 , 34 , 32 , 23 .


116 i 161 141 i 114 163 i 136 125 i 152 162 i 126


12 , 24 , 7 , 13 , 14 .


18 , 24 , 42 , 68 , 48 .

Estratgies de clcul

Srie 131.2.1

41 + 1 = 42 + 2 = 43 + 3 =

44 + 4 = 45 + 5 =

Srie 131.2.2

160 + 5 = 160 + 6 = 160 + 7 =

160 + 8 = 160 + 9 =

Srie 131.2.3

650 + 2 = 180 + 2 = 680 + 2 =

150 + 2 = 750 + 2 =

Srie 131.2.4

160 + 1 = 161 + 1 = 163 + 1 =

169 + 1 = 166 + 1 =

Srie 131.2.5

161 1 = 163 1 = 165 1 =

167 1 = 169 1 =


ProjectePolar

Matemtiques

Clcul analtic

N132N

om

: D

ata:

49



35 ,168 , 253 , 198 , 456 .


84 , 28 , 62 , 48 , 24 .


165 i 115 135 i 145 145 i 165 165 i 135 135 i 155


31 o 35 66 o 36 69 o 49 37 o 53 45 o 35


18 , 23 , 52 , 97 , 22 .

Estratgies de clcul

Srie 132.2.1

141 + 1 = 161 + 6 = 111 + 3 =

161 + 4 = 131 + 5 =

Srie 132.2.2

166 + 5 = 161 + 6 = 163 + 7 =

162 + 8 = 161 + 9 =

Srie 132.2.3

153 + 6 = 153 + 5 = 153 + 3 =

153 + 1 = 153 + 7 =

Srie 132.2.4

161 + 6 = 111 + 1 = 131 + 4 =

141 + 3 = 151 + 6 =

Srie 132.2.5

20 2 = 23 2 = 25 2 =

27 2 = 29 2 =


ProjectePolar

Matemtiques

Clcul analtic

N133N

om

: D

ata:

50



24 , 157 , 499 , 533 , 786 .


28 , 62 , 84 , 48 , 22 .


163 i 126 124 i 142 145 i 154 143 i 134 163 i 136


270 , 230 , 250 , 210 , 290 .


9 , 12 , 21 , 34 , 24 .

Estratgies de clcul

Srie 133.2.1

30 + 10 = 30 + 20 = 40 + 30 =

41 + 11 = 15 + 15 =

Srie 133.2.2

158 + 5 = 158 + 6 = 158 + 7 =

158 + 8 = 158 + 0 =

Srie 133.2.3

130 + 6 = 150 + 5 = 160 + 3 =

140 + 0 = 160 + 7 =

Srie 133.2.4

200 10 = 400 10

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