Les tables d'addition.

Donne dans chaque cas le résultat de l'addition.

1 + 3 = 7 + 5 = 10 + 10 = 4 + 9 = 10 + 10 = 5 + 9 = 4 + 8 = 0 + 2 = 1 + 1 = 6 + 1 =

1 + 3 = 4 7 + 5 = 12 10 + 10 = 20 4 + 9 = 13 10 + 10 = 20 5 + 9 = 14 4 + 8 = 12 0 + 2 = 2 1 + 1 = 2 6 + 1 = 7