Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 119 · 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. 1.12 × 25 =
2. 2.24 × 25 =
3. 3.125 × 34 =
4. 4.26 × 125 =
5. 5.45 × 38 =
6. 6.15 × 28 =
7. 7.30 × 65 =
8. 8.65 × 30 =
9. 9.45 × 6 =
10. 10.35 × 38 =
11. 11.65 × 24 =
12. 12.8 × 55 =
13. 13.34 × 75 =
14. 14.125 × 38 =
15. 15.35 × 40 =
16. 16.65 × 20 =
17. 17.75 × 32 =
18. 18.12 × 75 =
19. 19.125 × 12 =
20. 20.12 × 25 =
21. 21.35 × 20 =
22. 22.38 × 15 =
23. 23.6 × 35 =
24. 24.25 × 16 =
25. 25.30 × 15 =
26. 26.34 × 125 =
27. 27.28 × 35 =
28. 28.22 × 65 =
29. 29.75 × 14 =
30. 30.28 × 55 =
31. 31.6 × 45 =
32. 32.75 × 10 =
33. 33.28 × 45 =
34. 34.34 × 45 =
35. 35.32 × 15 =
36. 36.30 × 25 =
37. 37.30 × 55 =
38. 38.18 × 15 =
39. 39.30 × 25 =
40. 40.35 × 12 =

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