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Calcul mental mutiplier par 20 ou 30

Author: Connan Jean-Yves
Description:
Keywords: , , , , , , online teaching

Content:
Definitions:
0. 9 X 20
1. 8 X 20
2. 10 X 20
3. 6 X 20
4. 1 x 30
5. 3 X 30
6. 9 x 30
7. 5 X 20
8. 5 x 30
9. 4 X 20
10. 0 x 30
11. 7 X 20
12. 3 X 20
13. 7 X 30
14. 2 X 20
15. 1 X 20

Answers:
0. 0
1. 60
2. 20
3. 180
4. 270
5. 100
6. 40
7. 120
8. 210
9. 90
10. 160
11. 80
12. 30
13. 140
14. 150
15. 200