| 1) | Calcule les sommes suivantes. |
| –
4 – 5 = |
–
9 |
–
45 + 56 = |
11 |
5
– 15 = |
–
10 |
2
+ (– 5) = |
–
3 |
| 5
– 8 = |
–
3 |
–
32 – 14 = |
–
46 |
–
5 – 15 = |
–
20 |
–
5 – (– 6) = |
1 |
| –
2 + 9 = |
7 |
–
19 + 12 = |
–
7 |
–
5 + 15 = |
10 |
(–
5) – (+2) = |
–
7 |
| –
1 – 4 = |
–
5 |
32
– 56 = |
–
24 |
15
– 5 = |
10 |
(–
6) + (– 9) = |
–
15 |
| –
8 + 6 = |
–
2 |
–
14 – 25 = |
–
39 |
–
5 + 5 = |
0 |
–
(– 5) – (+3) = |
2 |
| –
(– 2) + (– 7) = |
–
5 |
–
8 + 5 – 6 – 2 = |
–
11 |
–
21 – 7 – 3 + 8 + 7 = |
–
16 |
| 9
– (– 13) = |
22 |
–
5 + 3 + 2 – 9 = |
–
9 |
3
– 7 – 3 + 8 + 7 = |
8 |
| –
21 – (– 15) = |
–
6 |
5
+ 3 – 4 – 6 = |
–
2 |
17
– 5 – 6 – 12 + 7 = |
1 |
| –
(+7) + (+12) = |
5 |
–
4 + 2 – 8 + 7 = |
–
3 |
15
– 25 – 8 – 7 = |
–
25 |
| 7
– (+8) = |
–
1 |
8
– 9 – 1 + 2 = |
0 |
18
+ 8 – 27 – 9 + 10 = |
0 |