Mathématiques

Question

Calculer de deux façons différentes niveau 5eme
A=7×(5+8-3)
B=105×(100-10)
C=(8+13-11)×6

1 Réponse

  • A = 7 x (5+8-3) = 7 x (13-3) = 7 x 10 = 70 ou 7 x (5+5) = 7 x 10 = 70. B = 105 x (100-10) = 105 x 90 = 9450 ou (105 x 100) - (105 x 10) = 10 500 - 1050 = 9450 C = (8+13-11) x 6 = 10 x 6 = 60 ou (8 x 6) + (13 x 6) - (11 x 6) = 48 + 78 - 66 = 126 - 66 = 60

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