Chapitre 3Addition et soustraction avec des entiers |
| a) | Calcule. |
|
(+
5) + (– 2) + (– 7) =
|
................................
|
7
+ (– 5) + 10 + (– 3) =
|
................................
|
|
(–
2) + (– 9) + (+ 6) =
|
................................
|
– 3
+ 5 + 12 + (– 1) =
|
................................
|
|
(–
5) + (+ 6) + (+ 4) =
|
................................
|
5
+ (– 6) + (– 5) + (– 1) =
|
................................
|
|
5
+ (– 2) + (– 3) + 7 =
|
................................
|
– 4
+ (– 6) + 4 + (– 1) =
|
................................
|
|
– 2
+ 5 + (– 3) + 7 =
|
................................
|
– 5
+ (– 6) + 6 + (– 5) + 4 =
|
................................
|
|
|
| b) | Calcule. |
|
– 7
+ 2 + 8 – 9 =
|
................................
|
– 8
+ 16 – 21 =
|
................................
|
|
–
8 – 5 + 3 =
|
................................
|
14
– 17 – 18 =
|
................................
|
|
5
– 7 – 2 + 3 =
|
................................
|
– 26
+ 39 + 18 =
|
................................
|
|
18
+ 3 – 5 – 7 =
|
................................
|
– 21
+ 17 + 14 – 12 =
|
................................
|
|
12
– 8 – 3 + 4 =
|
................................
|
29
– 37 – 1 =
|
................................
|
|
|
| c) | Calcule après avoir simplifié l'écriture. |
|
26
+ (– 4) – (– 7) =
|
............................................
|
|
– 17
– (+7) + (– 10) =
|
............................................
|
|
21
+ (– 5) + (– 6) – 7 =
|
............................................
|
|
9
– (– 5) + (– 4) – (+6) =
|
............................................
|
|
(– 4)
+ (– 6) – (– 9) =
|
............................................
|
|
15
+ (– 25) + (– 8) + (– 7) =
|
............................................
|
|
18
– (– 8) + (– 3) – (+6) =
|
............................................
|
|
– 7
– (– 8) + (– 3) – (+6) =
|
............................................
|
|
26
– 24 – (– 13) + 4 – (+10) =
|
............................................
|
|
13
+ (– 7) – (– 5) + 7 – 13 + (– 5) =
|
............................................
|
| d) | Complète par = ou "différent". |
|
3
+ 16
|
........
|
16
+ 3
|
– 4
– 9
|
........
|
– 9
– 4
|
a
– b
|
........
|
b
– a
|
|
3
– 16
|
........
|
– 16
– 3
|
– 4
+ 9
|
........
|
9
– 4
|
a
– b
|
........
|
a
+ b
|
|
– 3
– 16
|
........
|
– 16
– 3
|
4
+ 9
|
........
|
9
+ 4
|
a
– b
|
........
|
– b
+ a
|
|
– 3
+ 16
|
........
|
16
– 3
|
– 9
+ 4
|
........
|
4
– 9
|
a
– b
|
........
|
– a
+ b
|
| e) | Vrai ou faux ? |
|
12
– 10 + 15 = 15 – 10 + 12
|
............................ |
15
– 10 + 12 = 10 – 15 + 12
|
............................ |
|
– 15
+ 10 + 12 = – 12 + 10 + 15
|
............................ |
– 12
+ 10 – 15 = – 15 + 10 – 12
|
............................ |
Vos
remarques sont les bienvenues.
