Exercice de Mathématique : Calcul Mental
Calculs simples, additions et soustraction, calculez le plus rapidement possible

3 + 5 - 2	=			4 + 6 - 3	=
7 - 2 + 4	=			8 - 5 - 2	=
13 + 5 + 2	=			14 + 6 - 5	=
18 - 5 + 2	=			9 + 11 - 3	=
15 + 5 - 6	=			3 - 2 + 7	=

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