Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 172 · 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. 1.45 × 38 =
2. 2.32 × 65 =
3. 3.14 × 125 =
4. 4.15 × 26 =
5. 5.15 × 34 =
6. 6.55 × 38 =
7. 7.15 × 36 =
8. 8.36 × 15 =
9. 9.30 × 25 =
10. 10.35 × 6 =
11. 11.26 × 75 =
12. 12.36 × 55 =
13. 13.14 × 15 =
14. 14.10 × 125 =
15. 15.25 × 26 =
16. 16.18 × 45 =
17. 17.35 × 38 =
18. 18.32 × 35 =
19. 19.38 × 45 =
20. 20.30 × 65 =
21. 21.75 × 14 =
22. 22.10 × 55 =
23. 23.38 × 15 =
24. 24.75 × 14 =
25. 25.15 × 36 =
26. 26.25 × 28 =
27. 27.25 × 40 =
28. 28.75 × 30 =
29. 29.38 × 55 =
30. 30.55 × 32 =
31. 31.24 × 55 =
32. 32.10 × 15 =
33. 33.55 × 28 =
34. 34.55 × 24 =
35. 35.24 × 65 =
36. 36.32 × 75 =
37. 37.45 × 30 =
38. 38.125 × 36 =
39. 39.65 × 34 =
40. 40.25 × 6 =

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