Mathematics, 15.02.2021 21:40 jenn8055
Exercice 1: Tout est calculable mentalement
1. Calcule en détaillant les 3 expressions suivantes :
A=7 x 5 - 16-4
, B= 19-(57 - 6 x 4) = 3
2. Recopie et complète les égalités suivantes par le nombre qui convient
a) 7+ ... x 10 = 100
b) 36 - - 6=30
3. Recopie et complète avec les signes opératoires qui conviennent :
a) 12...4...3 = 0;
b) 6 ... 7... 8 = 62
3. Recopie les expressions suivantes en plaçant des parenthèses pour obtenir les
résultats donnés :
1 + 9-3 x 7 = 43
2,5 + 4,5 x 17 -7 = 70
Answers: 2
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Exercice 1: Tout est calculable mentalement
1. Calcule en détaillant les 3 expressions suivantes :<...
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