Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 26 · 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 × 45 =
2. 2.125 × 12 =
3. 3.36 × 55 =
4. 4.25 × 6 =
5. 5.65 × 22 =
6. 6.15 × 8 =
7. 7.40 × 55 =
8. 8.30 × 75 =
9. 9.16 × 25 =
10. 10.12 × 55 =
11. 11.125 × 22 =
12. 12.15 × 38 =
13. 13.15 × 22 =
14. 14.25 × 26 =
15. 15.25 × 10 =
16. 16.8 × 45 =
17. 17.55 × 36 =
18. 18.10 × 55 =
19. 19.15 × 32 =
20. 20.15 × 16 =
21. 21.28 × 55 =
22. 22.10 × 45 =
23. 23.15 × 32 =
24. 24.26 × 55 =
25. 25.32 × 125 =
26. 26.55 × 6 =
27. 27.18 × 45 =
28. 28.20 × 35 =
29. 29.20 × 55 =
30. 30.75 × 36 =
31. 31.25 × 10 =
32. 32.75 × 32 =
33. 33.28 × 25 =
34. 34.20 × 55 =
35. 35.25 × 14 =
36. 36.55 × 36 =
37. 37.24 × 15 =
38. 38.26 × 15 =
39. 39.18 × 125 =
40. 40.16 × 25 =

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