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Exercice 2: Calcule astucieusement chaque expression: (Pense aux consells écrits dans le leçon) (4 points) a. 5,06 x 4 x (-100) x (-25) b. (-4) x (-100) x 25 % (-5) % (-7) c. (-5) x (-4) x (-3,5) x (-4) × (-0,5) %2 d. 4x (-0,025) x (-20) x 1000 x (-5) x (-2,25)

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