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Calcul mental mutiplier par 20 ou 30

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

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

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