Online teaching



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Cálculo mental

Author: Gutierrez Raul
Description:
Keywords: , , , , , , online teaching

Content:
Definitions:
0. 4 x 80
1. 3 x 10
2. 4 x 500
3. 2 x 1000
4. 9 x 90
5. 4 x 400
6. 2 x 20
7. 5 x 20
8. 7 x 700
9. 7 x 1000
10. 30 x 100
11. 5 x 60
12. 8 x 800
13. 60 x 10
14. 5 x 100
15. 2 x 70

Answers:
0. 320
1. 600
2. 1600
3. 6400
4. 40
5. 2000
6. 100
7. 2000
8. 7000
9. 300
10. 30
11. 4900
12. 500
13. 140
14. 3000
15. 810
.