Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 569 · 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. 1.40 × 75 =
2. 2.75 × 8 =
3. 3.6 × 125 =
4. 4.45 × 28 =
5. 5.36 × 35 =
6. 6.38 × 15 =
7. 7.18 × 65 =
8. 8.22 × 125 =
9. 9.55 × 32 =
10. 10.45 × 8 =
11. 11.25 × 16 =
12. 12.38 × 35 =
13. 13.22 × 15 =
14. 14.15 × 38 =
15. 15.34 × 125 =
16. 16.35 × 6 =
17. 17.65 × 40 =
18. 18.75 × 10 =
19. 19.45 × 12 =
20. 20.18 × 15 =
21. 21.15 × 28 =
22. 22.30 × 15 =
23. 23.65 × 30 =
24. 24.14 × 55 =
25. 25.10 × 125 =
26. 26.45 × 22 =
27. 27.45 × 22 =
28. 28.30 × 35 =
29. 29.55 × 14 =
30. 30.40 × 55 =
31. 31.75 × 6 =
32. 32.30 × 55 =
33. 33.16 × 55 =
34. 34.55 × 16 =
35. 35.25 × 38 =
36. 36.20 × 35 =
37. 37.24 × 65 =
38. 38.75 × 38 =
39. 39.75 × 36 =
40. 40.35 × 20 =

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