Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 590 · 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. 1.16 × 35 =
2. 2.40 × 55 =
3. 3.36 × 125 =
4. 4.125 × 20 =
5. 5.24 × 25 =
6. 6.38 × 45 =
7. 7.38 × 25 =
8. 8.20 × 55 =
9. 9.35 × 32 =
10. 10.20 × 55 =
11. 11.25 × 22 =
12. 12.38 × 45 =
13. 13.75 × 28 =
14. 14.65 × 22 =
15. 15.65 × 6 =
16. 16.6 × 35 =
17. 17.36 × 35 =
18. 18.15 × 10 =
19. 19.65 × 8 =
20. 20.25 × 12 =
21. 21.25 × 22 =
22. 22.35 × 32 =
23. 23.35 × 32 =
24. 24.35 × 22 =
25. 25.12 × 55 =
26. 26.125 × 10 =
27. 27.35 × 12 =
28. 28.55 × 34 =
29. 29.15 × 34 =
30. 30.15 × 8 =
31. 31.65 × 38 =
32. 32.35 × 40 =
33. 33.20 × 35 =
34. 34.24 × 125 =
35. 35.12 × 65 =
36. 36.6 × 45 =
37. 37.55 × 28 =
38. 38.22 × 45 =
39. 39.6 × 55 =
40. 40.12 × 65 =

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