1) 3 quarts d'une heure représente 45 minutes.
45 minutes X 60 = 2 700 secondes
2) 2268 kg X 5/7 = 1620 kg
3) 15 % de 3 785 € = 567,75 €
Exercice 2.
7/4 = 1,750 1,750 ≤ 7/4≤ 1,751
7/12 = 0,583 ≤ 7/12 ≤ 0,584
4/4 = 1,000 ≤ 4/4 ≤ 1,1001
7/10 = 0,700 ≤ 7/10 ≤ 0,701
25/7 = 3,571 ≤ 25/7 ≤ 3572
-4/3 = - 1,333 ≤ -4/3 ≤ - 1,334
21/3 = 7, 000 ≤ 21/3 ≤ 7,001
0/4 = 0 ≤ 0/4 ≤ 0,001
8/32 = 0,250 ≤ 8/32 ≤ 0,251