Ejercicios de clculo mental - Practica de la suma.

Suma de dos numeros menores de 10. Completa los cuadros en blanco.

3 + 2 = 4 + = 7

2 + 1 = 6 + = 8

2 + 1 = 8 + = 11

7 + 4 = 6 + = 11

3 + 8 = 4 + = 11

9 + 3 = 3 + = 5

6 + 7 = 4 + = 9

4 + 3 = 7 + = 8

7 + 7 = 5 + = 9

8 + 4 = 2 + = 3

7 + 1 = 4 + = 12

7 + 9 = 6 + = 14

5 + 7 = 8 + = 9

8 + 2 = 4 + = 6

1 + 5 = 8 + = 15

6 + 2 = 8 + = 12

9 + 8 = 3 + = 10

3 + 3 = 5 + = 7

9 + 5 = 8 + = 9

1 + 3 = 3 + = 10

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