Activités mentales 1

Prêt

Question 1

Calculez x 9

Question 2

Calculez 26 – (-6) x 7

Question 3

-5 3

Question 4

Question 5

Calculez (-1) 4

Question 6

Calculez (-1-5) 2

Question 7

Calculez (-81): (-9)

Question 8

(-2,7):0,5

Question 9

0,68:0,1

Question 10

Calculez x 2 pour x = 10

Correction

1) x 9 = =22

2) 26 – (-6) x 7 = =68

3) – 5 3 =- 5 x 5x 5 =-125

4) = x 3x 3= = 37

5) (-1) 4 =(-1) x (-1) x (-1) (- 1) =1

6)(-1-5)²=(-6)² =(-6) x (-6) = 36

7) (-81) : (-9) =81:9=9

8) (-2,7) : 0,5 = - 2,7 x 2=-5,4

9) 0,68 : 0,1 = 0,68 x 10 = 6,8

10) x 2 pour x = 10 10² = 10 x 10 = 100