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