Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 722 · 40 questions

How it works (Double and halve): Find the number ending in 5 and the even number. Double the one ending in 5; halve the even one. Repeat while it helps (25 → 50 → 100), then multiply.

1. 1.15 × 32 =
2. 2.40 × 15 =
3. 3.32 × 25 =
4. 4.35 × 6 =
5. 5.38 × 15 =
6. 6.38 × 65 =
7. 7.28 × 15 =
8. 8.20 × 35 =
9. 9.30 × 25 =
10. 10.14 × 55 =
11. 11.45 × 24 =
12. 12.10 × 125 =
13. 13.65 × 10 =
14. 14.25 × 12 =
15. 15.65 × 38 =
16. 16.15 × 32 =
17. 17.38 × 25 =
18. 18.32 × 65 =
19. 19.25 × 10 =
20. 20.25 × 40 =
21. 21.30 × 125 =
22. 22.32 × 75 =
23. 23.65 × 10 =
24. 24.25 × 30 =
25. 25.55 × 36 =
26. 26.28 × 55 =
27. 27.45 × 12 =
28. 28.15 × 36 =
29. 29.55 × 28 =
30. 30.10 × 75 =
31. 31.15 × 8 =
32. 32.12 × 25 =
33. 33.18 × 55 =
34. 34.22 × 65 =
35. 35.10 × 45 =
36. 36.65 × 32 =
37. 37.75 × 36 =
38. 38.40 × 45 =
39. 39.32 × 45 =
40. 40.26 × 15 =

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