Chapitre 9Opérations sur les entiers |
Activité 3 - Propriétés de la multiplication |
| a)
Calcule en expliquant ton procédé |
| 125
. 7 . 8 = |
................................................................................................................... |
| 5
. 45 . 20 = |
................................................................................................................... |
| 7
. 4 . 25 . 3 = |
................................................................................................................... |
| 5
. 8. 17 = |
................................................................................................................... |
| 25
. 4 . 7 . 12 = |
................................................................................................................... |
|
b) Calcule en
expliquant ton procédé. Ne te trompe pas avec les signes
!
|
|
2
. (– 5) . 3 .
7 =
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...................................................................................................................
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(–
3) . (– 2) . (– 5) .
(– 2) =
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...................................................................................................................
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(–
5) . (– 2) . 7 . (– 3) =
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...................................................................................................................
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–
4 . (– 5) . 3 . 4 =
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...................................................................................................................
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(–
2) . (– 5) . (– 3) .
(– 25) . (– 4) =
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...................................................................................................................
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| (– 5) . (– 2) . (– 3) . (– 12) = |
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4 . 14 . (– 2) . (– 3) = |
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| 3 . (– 2) . (– 12) . (– 45) = |
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(– 2) . (– 3) . (– 14) . (– 6) . (– 4) = |
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| (– 5) . (– 17) . 4 . 12 = |
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5 . 4 . 12 . (– 2) . (– 3) = |
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| (– 4) . 12 . 15 . 17 = |
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(– 1) . (– 3) . (– 7) . 5 . 12 = |
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| (– 1) . (– 74) . (– 2) . 8 = |
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(– 4) . (– 32) . 7 = |
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| –
5 . 7 . (– 2) = |
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– 2 . (– 4) . (– 10) . 7 = |
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| 8 . (– 1) . (– 2) . (– 3) = |
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5 . (– 3) . (– 1) . (– 2) = |
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| – 2 . 5 . 4 . (– 3) = |
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1 . 7 . (– 4) . (– 8) = |
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| 2 . 5 . (– 8) . 1 = |
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(– 1) . 1 . (– 2) . (– 1) . (– 2) = |
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| 4 . (– 5) . (– 3) . (– 2) = |
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5 . (– 2) . (– 10) . 0 = |
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| (– 2) . (– 2 ) . (– 2) = |
.............. |
(+2) . (+2 ) . (+2) . (+2) = |
.............. |
| (– 3) . (– 3) = |
.............. |
(+2
) . (+2) . (+2) = |
.............. |
| (– 4) . (– 4) . (– 4) = |
.............. |
(– 1) . (– 1) . (– 1) . (– 1) . (– 1) = |
.............. |
| (– 2) . (– 2 ) . (– 2) . (– 2) = |
.............. |
(– 1) . (– 1) . (– 1) . (– 1) = |
.............. |
| (– 5) . (– 5) . (– 5) = |
.............. |
(– 1) . (– 1) . (– 1) = |
.............. |
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|
| (–
2)3 = |
.............. |
(–
1)5 = |
.............. |
| (–
2)4 = |
.............. |
(–
1)17 = |
.............. |
| (–
10)3 = |
.............. |
(–
1)36 = |
.............. |
| (–
10)6 = |
.............. |
(+1)7
= |
.............. |
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(–
2)5 =
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..............
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(+
2)3 =
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..............
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(–
2)4 =
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..............
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(–
3)3 =
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..............
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(–
7)2 =
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..............
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(–
1)4 =
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..............
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(–
5)2 =
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..............
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(–
10)2 =
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..............
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(–
1)3 =
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..............
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(–
4)3 =
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..............
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(+
10)3 =
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..............
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(–
2)7 =
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..............
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Vos
remarques sont les bienvenues.
