| c) | Calcule les sommes suivantes. |
| (+
5) + (+ 4) = |
+
9 |
(–
2) + (– 3) = |
–
5 |
(–
5) + (– 1) = |
–
6 |
| (–
3) + (– 2) = |
–
5 |
(+
3) + (+ 7) = |
+
10 |
(+
5) + (+ 1) = |
+
6 |
| (+
5) + (– 3) = |
+
2 |
(–
6) + (+ 2) = |
–
4 |
(–
5) + (+ 1) = |
–
4 |
| (+
7) + (– 10) = |
–
3 |
(–
9) + (+ 11) = |
+
2 |
(+
5) + (– 1) = |
+
4 |