Chapitre 9Opérations sur les entiers |
| a) | Calcule (attention, les opérations sont mélangées). |
–
5 – 3 = |
.......... |
–
2 + 7 = |
.......... |
–
4 .
2 = |
.......... |
15
– 2 = |
.......... |
(–
5) .
(– 3) = |
.......... |
–
2 .
(– 7) = |
.......... |
(–
4) + 2 = |
.......... |
15
.
(– 2) = |
.......... |
+
5 – 3 = |
.......... |
–
2 – 7 = |
.......... |
(–
4) .
(– 2) = |
.......... |
–
15 – 2 = |
.......... |
(+
5) .
(–3) = |
.......... |
–
7 .
(– 2) = |
.......... |
–
4 – 2 = |
.......... |
–15
.
(– 2) = |
.......... |
3
– 5 = |
.......... |
–
2 .
7 = |
.......... |
2
– 4 = |
.......... |
–
2 + 15 = |
.......... |
|
|
| b) | Calcule. |
–
7 – 4 + 5 = |
........................... |
–
7 – 3 – 5 – 2 = |
........................... |
–
7 .
(– 4 ) . 5 = |
........................... |
–
3 + 5 + 6 – 3 – 1 = |
........................... |
–
4 + 5 + 6 – 7 = |
........................... |
–
3 .
5 .
6 .
(– 3) .
(– 1) = |
........................... |
(–
4) .
5 .
6 .
(– 7) = |
........................... |
–
4 + 4 – 5 + 5 = |
........................... |
(–
7) .
(– 3) .
(– 5) .
(– 2) = |
........................... |
–
4 .
4 .
5 .
(– 5) = |
........................... |
|
|
| c) | Complète en utilisant ta calculatrice |
 |
|
| d) | Calcule la valeur numérique des expressions suivantes si tu sais que :
|
| b
+ a= |
|
–
2 .
a = |
|
| 3
.
c = |
|
–
5d = |
|
| 2b
= |
|
a
+ d = |
|
| b
– c = |
|
a
.
b .
c = |
|
| a
– b = |
|
b
+ c + d = |
|
|
|
|||
| a2
= |
|
5
.
c3 = |
|
| b3
= |
|
3
.
b2 = |
|
| d3
= |
|
2
.
d2 = |
|
| c5
= |
|
8b3
= |
|
| b2
= |
|
–
10d3 = |
|
|
|
 |
| e) | Utilise les règles de priorité par calculer. |
| 5
+ (– 2) . 7 = |
|
3
. (– 2) + 4 = |
|
| 2
. (– 6) + (– 5) . (– 3) = |
|
–
4 + 3 .
(– 2) = |
|
| 4
+ (– 2) . 5 + 7 = |
|
–
9 . 3 + 2 . (– 5) = |
|
| –2
. 5 + (– 4) . 7 = |
|
22
– 3 . (– 6) = |
|
| 4
– 5 . (– 7) = |
|
–
8 . (– 2) – 5 . 3 = |
|
| –
8 . 5 + (– 2) . 3 = |
|
| 5
+ 10 . (– 2)4 = |
|
4
– 5 . (2 – 5) = |
|
|
– 4 + 5 . (– 3)2 = |
|
4
. 5 + 2 . (–5) = |
|
|
2 .(– 5)3 – 4 . (– 10)2 = |
|
4
. (–5) – 2 .(– 5) = |
|
|
3 – 3 . (– 2)3 + 5 = |
|
4
. (5 + 2 . (– 5)) = |
|
|
3 . (– 4)3 – (– 5)2 . 7 = |
|
(4
+ 5) . (– 2 + 5) = |
|
| (4
– 5) . (2 – 5) = |
|
4
+ 5 . (– 2) . 5 = |
|
|
|
| f) | Calcule la valeur numérique des expressions suivantes si tu sais que :
|
| a
– c – d + d = |
|
5a
– 2d = |
|
| c
– d – b – a = |
|
b
.
(c + a) = |
|
| 3a
+ 2c = |
|
d
.
(b – a) = |
|
| 2b
+ 5d = |
|
–
2 .
(b – d) = |
|
| –
3d – 5c = |
|
b
+ a) .
(d + c) = |
|
| –
2b – 3a = |
|
c
+ b) .
(a – d) = |
|
| g) | Calcule avec ta calculatrice. |
|
(–
173 + 288) .
(– 742 – 374) = |
........................................ |
| (582
– 997) .
(– 1524 + 618) = |
........................................ |
|
| (–
729) .
47 – (– 501) .
79 = |
........................................ |
|
| –
226 + (– 72) .
87 = |
........................................ |
|
| (–
17) .
(– 33) + 43 .
(– 22) = |
........................................ |
|
| (–
29)3 .
18 + (– 32)2 .
(– 41) = |
........................................ |
|
| (–
578 + 236)3 = |
........................................ |
|
| –
12 .
(– 36 + 17)3 = |
........................................ |
Vos
remarques sont les bienvenues.
272 