Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 286 · 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. 2.25 × 32 =
3. 3.75 × 30 =
4. 4.25 × 38 =
5. 5.22 × 25 =
6. 6.34 × 15 =
7. 7.75 × 18 =
8. 8.14 × 75 =
9. 9.75 × 28 =
10. 10.16 × 45 =
11. 11.30 × 125 =
12. 12.125 × 6 =
13. 13.38 × 65 =
14. 14.15 × 6 =
15. 15.45 × 32 =
16. 16.10 × 15 =
17. 17.16 × 45 =
18. 18.65 × 22 =
19. 19.10 × 25 =
20. 20.6 × 125 =
21. 21.35 × 6 =
22. 22.45 × 16 =
23. 23.25 × 28 =
24. 24.6 × 65 =
25. 25.25 × 38 =
26. 26.10 × 55 =
27. 27.125 × 6 =
28. 28.38 × 55 =
29. 29.35 × 14 =
30. 30.15 × 6 =
31. 31.28 × 45 =
32. 32.35 × 8 =
33. 33.25 × 38 =
34. 34.55 × 8 =
35. 35.18 × 15 =
36. 36.125 × 36 =
37. 37.14 × 75 =
38. 38.30 × 15 =
39. 39.65 × 16 =
40. 40.65 × 26 =

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