Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 744 · 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. 2.65 × 30 =
3. 3.12 × 25 =
4. 4.25 × 14 =
5. 5.16 × 75 =
6. 6.125 × 14 =
7. 7.65 × 20 =
8. 8.28 × 25 =
9. 9.125 × 26 =
10. 10.15 × 20 =
11. 11.15 × 14 =
12. 12.32 × 15 =
13. 13.65 × 22 =
14. 14.15 × 22 =
15. 15.15 × 32 =
16. 16.65 × 22 =
17. 17.35 × 30 =
18. 18.35 × 20 =
19. 19.20 × 75 =
20. 20.45 × 22 =
21. 21.26 × 65 =
22. 22.38 × 55 =
23. 23.75 × 32 =
24. 24.18 × 55 =
25. 25.10 × 35 =
26. 26.24 × 15 =
27. 27.15 × 30 =
28. 28.18 × 45 =
29. 29.125 × 22 =
30. 30.28 × 125 =
31. 31.25 × 16 =
32. 32.32 × 75 =
33. 33.8 × 65 =
34. 34.125 × 22 =
35. 35.15 × 36 =
36. 36.10 × 35 =
37. 37.6 × 25 =
38. 38.36 × 55 =
39. 39.10 × 35 =
40. 40.35 × 6 =

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