Bonjour
1)
60) [5 + 2 x (8 - 2)] x 3
= (5 + 2 x 6) x 3
= (5 + 12) x 3
= 17 x 3
= 51
7) 4 x 7 + 3 x 9
= 28 + 27
= 55
6) 25 - [16 - (9 + 4)]
= 25 - (16 - 13)
= 25 - 3
= 22
55) (5 - 3) x (16 : 2 + 6 : 3)
= 2 x (8 + 2)
= 2 x 10
= 20
16) 1 + 2 x 3 + 4 x 5
= 1 + 6 + 20
= 27
27) 15 : 3 - 32/8 + 3 x 6
= 5 - 4 + 18
= 19
3) [15 : (3 + 2) - 1] x 6
= (15 : 5 - 1) x 6
= (3 - 1) x 6
= 2 x 6
= 12
51) [7 + 2 x (4 + 5)] : 5
= (7 + 2 x 9) : 5
= (7 + 18) : 5
= 25 : 5
= 5
2) 33 - (9,7 + 8,3)
= 33 - 18
= 15
12) 49 / (35 : 5)
= 49 : 7
= 7
22) (3 x 5 - 7) / 4
= (15 - 7) / 4
= 8/4
= 2
5) [12 - (6 + 4)] x 8
= (12 - 10) x 8
= 2 x 8
= 16
20) 15 x (6,4 - 2 x 1,2)
= 15 x (6,4 - 2,4)
= 15 x 4
= 60
19) 30 : [(11 - 9) x 2 + 1]
= 30 : (2 x 2 + 1)
= 30 : 5
= 6
15) (19 + 8) : (5 + 4)
= 27 : 9
= 3.
2) Tu mettras les dominos en place.
