1. Calcul mental
“Opérations sur les relatifs”
série n°5

2. Pour chaque
diapositive, calculer
en respectant les
règles opératoires.

3. Diapositive 1
7 × (-6)

4. Diapositive 2
-20 ÷ (-5)

5. Diapositive 3
-3 − 8

6. Diapositive 4
10 − (-4)

7. Diapositive 5
-10
2

8. FIN

9. CORRECTION

10. Diapositive 1
7 × (-6) = -42

11. Diapositive 1
7 × (-6) = -42

12. Diapositive 1
7 × (-6) = -42

13. Diapositive 2
-20 ÷ (-5) = 4

14. Diapositive 2
-20 ÷ (-5) = 4

15. Diapositive 3
-3 − 8 = -11

16. Diapositive 3
-3 − 8 = -11

17. Diapositive 4
10 − (-4) = 10 + 4 = 14

18. Diapositive 4
10 − (-4) = 10 + 4 = 14

19. Diapositive 4
10 − (-4) = 10 + 4 = 14

20. Diapositive 5
-10 = -10 × 10
= -100
2

21. Diapositive 5
-10 = -10 × 10
= -100
2

22. Diapositive 5
-10 = -10 × 10
= -100
2

23. Diapositive 5
-10 = -10 × 10
= -100
2