Chapitre 6Calcul littéral |
| f)
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Calcule de manière intelligente la valeur numérique des expressions suivantes. |
| a . b . c = | 3 . 5 . 20 = | (a = 3, b = 5 et c = 20) | 300 |
| 3 . (5 . 20) = | l'associativité |
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| 3 . 100 = | |
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| x . y . z = | 4 . 6 . 25 = | (x = 4, y = 6 et z = 25) | 600 |
| 6 . 4 . 25 = | la
commutativité |
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| 6 . (4 . 25) = | l'associativité |
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| 6 . 100 = | |
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| c . d . e = | 8 . 7 . 125 = | (c = 8, d = 7 et e = 125) | 7000 |
| 7 . 8 . 125 = | la
commutativité |
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| 7 . (8 . 125) = | l'associativité |
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| 7 . 1000 = | |
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| p . q . r = | 2 . 9 . 15 = | (p = 2, q = 9 et r = 15) | 270 |
| 2 . 15 . 9 = | la
commutativité |
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| (2 . 15) . 9 = | l'associativité |
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| 30 . 9 = | |
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| 25a . 4d = | 25 . 3 . 4 . 7 = | (a = 3 et d = 7) | 2100 |
| 25 . 4 . 3 . 7 = | la
commutativité |
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| (25 . 4) . (3 . 7) = | l'associativité |
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| 100 . 21 = | |
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| 4z . 8q = | 4 . 25 . 8 . 9 = | (z = 25 et q = 9) | 7200 |
| (4 . 25) . (8 . 9) = | l'associativité |
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| 100 . 72 = | |
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| a + b + a + b = | 13 + 7 + 13 + 7 = | (a = 13 et b = 7) | 40 |
| (13 + 7) + (13 + 7) = | l'associativité |
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| 20 + 20 = | |
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| a + b + c = | 17 + 6 + 27 = | (a = 17, b = 6 et c = 27) | 50 |
| (17 + 6) + 27 = | l'associativité |
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| 23 + 27 = | |
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| x + x + y = | 16 + 16 + 24 = | (x = 16 et y = 24) | 56 |
| 16 + (16 + 24) = | l'associativité |
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| 16 + 40 = | |
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| a + b + c + d = | 12 + 15 + 8 + 25 = | (a = 12, b = 15, c = 8 et d = 25) | 60 |
| 12 + 8 + 15 + 25 = | la
commutativité |
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| (12 + 8) + (15 + 25) = | l'associativité |
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| 20 + 40 = | |