3ème soutien calcul fractionnaire - PGCD - Collège Anne de Bretagne
3ème soutien calcul fractionnaire - PGCD - Collège Anne de Bretagne
3ème soutien calcul fractionnaire - PGCD - Collège Anne de Bretagne
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B = 234017316 = 468 × 5468 × 37 = 5 372. A × B = 3725 × 5 37 = 37 × 55 × 5 × 37 = 1 5EXERCICE 4 :1. A = 125 – 3 5 × 7 9 = 125 – 3 × 75 × 3 × 3 = 125 – 7 15 = 3615 – 7 15 = 291522. B = ⎛ ⎞ ⎝ 3 – 3 ⎠: 1 9 = ⎝ ⎛ ⎠ ⎞EXERCICE 5 :A = 7 4 – 1112 = 2112 – 1112 = 1012 = 5 623 – 9 3 : 1 9 = – 7 3 : 1 9 = – 7 3 × 9 = – 7 × 3 × 3 = – 213B = – 7 5 + 5 2 + 3 11 = – 154110 + 275110 + 30 – 154 + 275 + 30= = 151110 110110C = 5 42 × 2215 × 1844 = 5 × 2 × 11 × 6 × 36 × 7 × 3 × 5 × 2 × 2 × 11 = 1 14D =E =1625= 1648 25 × 3548 = 8 × 2 × 5 × 75 × 5 × 8 × 2 × 3 = 7 153556314 = 563 × 1 14 = 7 × 2 × 43 × 2 × 7 = 4 3F = 5 3 + 4 49 × 3512 = 5 3 + 4 × 7 × 57 × 7 × 4 × 3 = 5 3 + 5 21 = 3521 + 5 21 = 4021
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