Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 435 · 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. 1.18 × 125 =
2. 2.22 × 55 =
3. 3.75 × 14 =
4. 4.25 × 10 =
5. 5.10 × 15 =
6. 6.55 × 10 =
7. 7.75 × 12 =
8. 8.24 × 15 =
9. 9.15 × 40 =
10. 10.15 × 40 =
11. 11.125 × 18 =
12. 12.35 × 28 =
13. 13.75 × 32 =
14. 14.20 × 45 =
15. 15.55 × 14 =
16. 16.25 × 12 =
17. 17.35 × 40 =
18. 18.30 × 65 =
19. 19.55 × 34 =
20. 20.15 × 28 =
21. 21.55 × 28 =
22. 22.24 × 65 =
23. 23.30 × 35 =
24. 24.6 × 25 =
25. 25.10 × 75 =
26. 26.35 × 24 =
27. 27.15 × 14 =
28. 28.125 × 32 =
29. 29.15 × 12 =
30. 30.65 × 10 =
31. 31.75 × 22 =
32. 32.38 × 55 =
33. 33.25 × 12 =
34. 34.75 × 40 =
35. 35.45 × 36 =
36. 36.25 × 6 =
37. 37.36 × 45 =
38. 38.10 × 75 =
39. 39.16 × 75 =
40. 40.22 × 65 =

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