Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 220 · 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 × 6 =
2. 2.34 × 65 =
3. 3.75 × 18 =
4. 4.38 × 65 =
5. 5.20 × 25 =
6. 6.25 × 12 =
7. 7.55 × 6 =
8. 8.55 × 30 =
9. 9.65 × 16 =
10. 10.18 × 45 =
11. 11.75 × 26 =
12. 12.35 × 20 =
13. 13.38 × 55 =
14. 14.55 × 20 =
15. 15.10 × 35 =
16. 16.16 × 65 =
17. 17.15 × 30 =
18. 18.45 × 16 =
19. 19.18 × 25 =
20. 20.40 × 75 =
21. 21.125 × 8 =
22. 22.55 × 10 =
23. 23.6 × 65 =
24. 24.55 × 38 =
25. 25.6 × 75 =
26. 26.125 × 40 =
27. 27.30 × 75 =
28. 28.75 × 36 =
29. 29.25 × 14 =
30. 30.35 × 24 =
31. 31.55 × 12 =
32. 32.14 × 35 =
33. 33.45 × 16 =
34. 34.28 × 75 =
35. 35.45 × 12 =
36. 36.38 × 125 =
37. 37.6 × 35 =
38. 38.75 × 32 =
39. 39.35 × 12 =
40. 40.75 × 26 =

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