Exercice 1
84 × 50 × 20 = 84 000
55 × 5 × 2 = 550
2 × 97 × 5 = 970
5 × 41 × 200 = 41 000
5 × 77 × 2 = 770
20 × 52 × 50 = 52 000
12 × 50 × 20 = 12 000
2 × 50 × 34 = 3 400
500 × 87 × 2 = 87 000
65 × 2 × 50 = 6 500
21 × 50 = 1 050
32 × 50 = 1 600
49 × 50 = 2 450
50 × 31 = 1 550
50 × 31 = 1 550
50 × 13 = 650
50 × 45 = 2 250
27 × 50 = 1 350
50 × 43 = 2 150
50 × 29 = 1 450
Exercice 2
10 × 42 = 420
79 × 10 = 790
10 × 97 = 970
80 : 10 = 8
394,3 : 10 = 39,43
253,1 : 10 = 25,31
65,04 × 10 = 650,4
98,43 × 10 = 984,3
10 × 44 = 440
9,291 × 10 = 92,91
932,84 : 10 = 93,284
100 × 44,9 = 4 490
67,909 × 100 = 6 790,9
100 × 58,4 = 5 840
633,32 : 10 = 63,332
416,4 : 100 = 4,164
90,314 × 10 = 903,14
88,43 : 100 = 0,8843
463,1 : 10 = 46,31
48,962 × 10 = 489,62