Basic Facts

1. Half 70=35
2. Double 9=18
3. Half 40=20
4. Half 20=10
5. Double 100=200
6. Half 100=50
7. Double 2=4
8. Double 4=8
9. Half 70=35
10. 1/2 of 40=20
11. Half 70=35
12. Double 200=400
13. 1/4 of 12=3
14. 4 x 4=16
15. 1/5 of 20=4
16. 1/3 of 9=3
17. 3 x 5=15
18. 10 x 10=100
19. 1/10 of 100=10
20. 2/5 of 20=8
21. 2/3 of 9=6
22. 2/2 of 40=40
23. 1/8 of 64=8
24. 2/8 of 64=16
25. 2/8 of 80=20
26. Double 3=6
27. 1/2 of 2=1
28. Double 7=14
29. 1/5 of 100=20