Réponse:
1. 1 + 5 = 6
2. 20 ÷ 4 = 5
3. 9× (−7) = −63
4. −4 - (−9) = 5
5. 8 ÷ (-1)= −8
6. −2 + (−4) = -6
7. −6 − (−3) = -3
8. -5 × 2 = −10
9. −4 − (−9) = 5
10. -9× 1 = −9
11. −6 +(-4) = −10
12. −1 - (− 8)= 7
13. 10 × 10 = −100
14. 9 + 9 = 18
15. −35 ÷ 5 = -7
16. −3 + (−1) = -4
17. 2 ÷ 1 = 2
18. 10 ÷ 2 = 5
19. 11 − 5 = 6
20. 1 × 3 = 3
J'espère t'avoir aidé.