Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 126 · 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. 1.20 × 35 =
2. 2.30 × 35 =
3. 3.65 × 28 =
4. 4.45 × 18 =
5. 5.55 × 24 =
6. 6.18 × 35 =
7. 7.12 × 125 =
8. 8.20 × 125 =
9. 9.26 × 55 =
10. 10.15 × 16 =
11. 11.18 × 55 =
12. 12.25 × 6 =
13. 13.25 × 26 =
14. 14.65 × 24 =
15. 15.18 × 65 =
16. 16.6 × 45 =
17. 17.8 × 15 =
18. 18.125 × 8 =
19. 19.6 × 65 =
20. 20.6 × 65 =
21. 21.45 × 32 =
22. 22.22 × 25 =
23. 23.30 × 125 =
24. 24.35 × 12 =
25. 25.25 × 20 =
26. 26.25 × 6 =
27. 27.125 × 26 =
28. 28.15 × 22 =
29. 29.14 × 55 =
30. 30.75 × 16 =
31. 31.45 × 30 =
32. 32.15 × 40 =
33. 33.36 × 75 =
34. 34.75 × 32 =
35. 35.22 × 75 =
36. 36.15 × 40 =
37. 37.65 × 12 =
38. 38.55 × 36 =
39. 39.18 × 15 =
40. 40.15 × 40 =

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