Ejercicios de clculo mental - Practica de la suma.

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

1 + 8 = 2 + = 3

3 + 1 = 5 + = 14

2 + 9 = 4 + = 10

1 + 3 = 8 + = 14

8 + 9 = 6 + = 10

9 + 1 = 8 + = 17

8 + 8 = 7 + = 15

6 + 5 = 6 + = 11

5 + 6 = 4 + = 11

7 + 8 = 4 + = 9

6 + 5 = 8 + = 14

5 + 8 = 9 + = 17

5 + 7 = 3 + = 10

2 + 7 = 7 + = 13

6 + 6 = 4 + = 12

2 + 9 = 1 + = 8

2 + 6 = 4 + = 12

5 + 5 = 8 + = 9

7 + 6 = 7 + = 11

9 + 1 = 6 + = 10

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