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Activités mentales 1Activités mentales 1
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Prêt Prêt
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Question 1 Question 1
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Calculez -14 + 4x 9 Calculez -14 + 4x 9
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Question 2 Question 2
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Calculez 26 – (-6) x 7Calculez 26 – (-6) x 7
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Question 3Question 3
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-5-533
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Question 4 Question 4
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10 + 310 + 333
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Question 5Question 5
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Calculez (-1)Calculez (-1)44
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Question 6Question 6
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Calculez (-1-5)Calculez (-1-5)22
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Question 7Question 7
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Calculez (-81): (-9)Calculez (-81): (-9)
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Question 8 Question 8
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(-2,7):0,5(-2,7):0,5
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Question 9Question 9
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0,68:0,10,68:0,1
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Question 10Question 10
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Calculez Calculez xx22 pour x pour x = 10 = 10
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Correction Correction
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1) -14 + 4 x 9 = -14 1) -14 + 4 x 9 = -14 +36=22+36=22
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2) 26 – (-6) x 7 = 26 2) 26 – (-6) x 7 = 26 +42=68+42=68
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3) – 53) – 533=- 5 x 5x 5 =-125=- 5 x 5x 5 =-125
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4)10 +34)10 +333 = 10 +3 x 3x = 10 +3 x 3x 3=10 +27 = 373=10 +27 = 37
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5) 5) (-1)(-1)44 = =(-1) x (-1) x (-1) (-(-1) x (-1) x (-1) (-1) =11) =1
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6)(-1-5)²=(-6)² =(-6) x (-6) 6)(-1-5)²=(-6)² =(-6) x (-6) = 36= 36
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7) (-81) : (-9) =81:9=97) (-81) : (-9) =81:9=9
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8)8) (-2,7) : 0,5 = - 2,7 x 2=-5,4 (-2,7) : 0,5 = - 2,7 x 2=-5,4
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9)9) 0,68 : 0,1 = 0,68 x 10 = 6,8 0,68 : 0,1 = 0,68 x 10 = 6,8
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10) 10) xx22 pour pour xx = 10 = 10 10² = 10 x 10 = 100 10² = 10 x 10 = 100