Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 27 · 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. 1.28 × 75 =
2. 2.45 × 36 =
3. 3.55 × 24 =
4. 4.75 × 10 =
5. 5.55 × 36 =
6. 6.45 × 26 =
7. 7.6 × 55 =
8. 8.8 × 55 =
9. 9.30 × 65 =
10. 10.20 × 35 =
11. 11.12 × 75 =
12. 12.20 × 25 =
13. 13.24 × 65 =
14. 14.25 × 22 =
15. 15.25 × 10 =
16. 16.14 × 45 =
17. 17.10 × 75 =
18. 18.36 × 35 =
19. 19.45 × 8 =
20. 20.12 × 125 =
21. 21.26 × 75 =
22. 22.75 × 20 =
23. 23.45 × 34 =
24. 24.28 × 45 =
25. 25.45 × 10 =
26. 26.20 × 125 =
27. 27.15 × 38 =
28. 28.15 × 14 =
29. 29.55 × 28 =
30. 30.10 × 125 =
31. 31.15 × 36 =
32. 32.16 × 75 =
33. 33.55 × 12 =
34. 34.26 × 65 =
35. 35.125 × 8 =
36. 36.14 × 15 =
37. 37.65 × 38 =
38. 38.36 × 125 =
39. 39.45 × 36 =
40. 40.25 × 30 =

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