Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 137 · 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 × 16 =
2. 2.15 × 24 =
3. 3.125 × 28 =
4. 4.55 × 14 =
5. 5.15 × 18 =
6. 6.32 × 15 =
7. 7.45 × 10 =
8. 8.26 × 25 =
9. 9.75 × 32 =
10. 10.75 × 20 =
11. 11.25 × 18 =
12. 12.24 × 75 =
13. 13.25 × 6 =
14. 14.65 × 22 =
15. 15.34 × 65 =
16. 16.26 × 45 =
17. 17.125 × 16 =
18. 18.12 × 25 =
19. 19.20 × 25 =
20. 20.15 × 14 =
21. 21.45 × 10 =
22. 22.55 × 20 =
23. 23.38 × 65 =
24. 24.24 × 45 =
25. 25.32 × 35 =
26. 26.75 × 8 =
27. 27.45 × 34 =
28. 28.28 × 125 =
29. 29.34 × 25 =
30. 30.125 × 34 =
31. 31.15 × 6 =
32. 32.55 × 24 =
33. 33.24 × 75 =
34. 34.6 × 35 =
35. 35.25 × 14 =
36. 36.45 × 6 =
37. 37.6 × 55 =
38. 38.18 × 75 =
39. 39.12 × 25 =
40. 40.75 × 34 =

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