This document contains a math lesson on negative numbers with 5 problems. Each problem shows a calculation with negative numbers and the correct answer. The problems include multiplying and dividing positive and negative numbers, such as -25 x (-9) x (-4) = -900 and -59 : (-10) = 5.9. The document provides the problems, steps, and answers to practice calculations with negative relatives.

1. Calcul mental
N°9
“Les nombres relatifs”

2. Diapositive 1
18 x (-0,1)

4. Diapositive 2
-12 x (-0,5)

6. Diapositive 3
-25 x (-9) x (-4)

8. Diapositive 4
- 59 : (-10)

10. Diapositive 5
55 : (-5)

12. CORRECTION

13. FIN

14. Diapositive 1
18 x (-0,1)
= -1,8

15. Diapositive 2
-12 x (-0,5)
= 6

16. Diapositive 3
-25 x (-9) x (-4)
= -900

17. Diapositive 4
- 59 : (-10)
= 5,9

18. Diapositive 5
55 : (-5)
= -11