Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 748 · 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. 1.125 × 32 =
2. 2.25 × 14 =
3. 3.45 × 30 =
4. 4.15 × 20 =
5. 5.125 × 6 =
6. 6.75 × 8 =
7. 7.75 × 12 =
8. 8.34 × 75 =
9. 9.28 × 15 =
10. 10.25 × 6 =
11. 11.25 × 24 =
12. 12.20 × 65 =
13. 13.30 × 35 =
14. 14.45 × 36 =
15. 15.125 × 26 =
16. 16.24 × 65 =
17. 17.18 × 25 =
18. 18.15 × 8 =
19. 19.8 × 65 =
20. 20.35 × 36 =
21. 21.18 × 125 =
22. 22.45 × 40 =
23. 23.75 × 28 =
24. 24.35 × 32 =
25. 25.25 × 36 =
26. 26.14 × 35 =
27. 27.6 × 125 =
28. 28.15 × 8 =
29. 29.45 × 6 =
30. 30.125 × 20 =
31. 31.22 × 125 =
32. 32.125 × 18 =
33. 33.8 × 65 =
34. 34.65 × 20 =
35. 35.6 × 125 =
36. 36.125 × 34 =
37. 37.24 × 45 =
38. 38.65 × 8 =
39. 39.32 × 65 =
40. 40.55 × 10 =

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