Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 963 · 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. 1.75 × 12 =
2. 2.125 × 12 =
3. 3.125 × 8 =
4. 4.30 × 25 =
5. 5.18 × 35 =
6. 6.15 × 16 =
7. 7.32 × 75 =
8. 8.18 × 55 =
9. 9.32 × 75 =
10. 10.75 × 16 =
11. 11.35 × 36 =
12. 12.14 × 35 =
13. 13.14 × 55 =
14. 14.35 × 18 =
15. 15.12 × 15 =
16. 16.15 × 8 =
17. 17.75 × 40 =
18. 18.35 × 8 =
19. 19.38 × 55 =
20. 20.75 × 36 =
21. 21.75 × 8 =
22. 22.16 × 35 =
23. 23.75 × 30 =
24. 24.8 × 25 =
25. 25.18 × 15 =
26. 26.36 × 35 =
27. 27.35 × 38 =
28. 28.35 × 26 =
29. 29.6 × 75 =
30. 30.25 × 24 =
31. 31.20 × 75 =
32. 32.75 × 34 =
33. 33.25 × 8 =
34. 34.14 × 45 =
35. 35.16 × 45 =
36. 36.6 × 15 =
37. 37.15 × 6 =
38. 38.16 × 125 =
39. 39.28 × 25 =
40. 40.30 × 65 =

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