This document presents 5 math problems involving adding positive and negative numbers. The problems are: -4 + 7, -2 + -9, 5 + -4, -8 + 3, and 3 + -6. The answers provided are: 3, -11, 1, -5, and -3 respectively.

1. Calcul mental
N°24
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2. Diapositive 1Diapositive 1
-4 + (+7) = ?

4. Diapositive 2Diapositive 2
-2 + (-9) = ?

6. Diapositive 3Diapositive 3
+5 + (-4) = ?

8. Diapositive 4Diapositive 4
-8 + (+3) = ?

10. Diapositive 5Diapositive 5
+3 + (-6) = ?

11. FIN

12. CORRECTION

13. Diapositive 1Diapositive 1
-4 + (+7) = +3 ou 3

14. Diapositive 2Diapositive 2
-2 + (-9) = -11

15. Diapositive 3Diapositive 3
+5 + (-4) = +1 ou 1

16. Diapositive 4Diapositive 4
-8 + (+3) = -5

17. Diapositive 5Diapositive 5
+3 + (-6) = -3