Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 250 · 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. 1.25 × 30 =
2. 2.12 × 25 =
3. 3.14 × 25 =
4. 4.35 × 10 =
5. 5.8 × 65 =
6. 6.30 × 25 =
7. 7.25 × 8 =
8. 8.55 × 34 =
9. 9.6 × 15 =
10. 10.15 × 34 =
11. 11.65 × 14 =
12. 12.55 × 36 =
13. 13.22 × 125 =
14. 14.18 × 45 =
15. 15.16 × 65 =
16. 16.16 × 125 =
17. 17.34 × 25 =
18. 18.25 × 24 =
19. 19.10 × 35 =
20. 20.125 × 28 =
21. 21.28 × 45 =
22. 22.35 × 32 =
23. 23.34 × 15 =
24. 24.6 × 65 =
25. 25.16 × 35 =
26. 26.125 × 6 =
27. 27.38 × 125 =
28. 28.65 × 40 =
29. 29.22 × 15 =
30. 30.18 × 55 =
31. 31.15 × 14 =
32. 32.38 × 35 =
33. 33.6 × 15 =
34. 34.8 × 25 =
35. 35.35 × 6 =
36. 36.16 × 45 =
37. 37.25 × 30 =
38. 38.40 × 15 =
39. 39.18 × 15 =
40. 40.14 × 65 =

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