Compléter les trous. Puis cliquer sur "Vérifier". Vous pouvez passer d'un trou à un autre en utilisant la touche tabulation. Attention aux accents sur certains mots.

Exercice N°1: Calculer A, B et C (On n'utilisera pas la calculatrice)

1) A = 2 - 3 x 5 =
B = (2 - 3) x 5 =
C = 2 - (3 x 5) =
2) A = -5 x (-3) + 2 =
B= -5 x (-3 + 2) =
C = [-5 x (-3)] + 2 =
3) A = 5 x 4 - 3 x 10 =
B = 2 x (10 - 4 + 6 x 3) =
C = (-3) x (-4) x (-10) =
4) A = (-1) x (-2) x (-3) =
B = -2 x (-3) x (-2) x 2 =
C = (-3 + 4) x (-2) + 1 =
5) A = -3 x 2 + 5 x 4 =
B = 2 x (-3) - 6 x (-2) =
C = (-5 + 2) x (-4) =
6) A = 100 : 2 =
B= -100 : 2 =
C = -100 : (-2) =
7) A = 3 x 4 : 2 =
B = (3 x 4) : 2 =
C = 3 x (4 : 2) =
8) A = 10 : 0,5 =
B = 10 x 0,5 =
C = 10 x 2 =
9) A = 4 + 10 : 2 =
B = 4 : 2 + 10 : 2 =
C = (4 + 10) : 2 =
10) A = (10 - 2 x 3) : 2 =
B = [(10 - 2) x 3] : 2 =
C = (10 - 2) x (3 : 2) =
11) A = 2 x (3 + 10) - 1 =
B = 2 x 3 + 10 - 1 =
C = 2 x 3 + (10 - 1) =