Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 791 · 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. 1.125 × 6 =
2. 2.15 × 6 =
3. 3.18 × 15 =
4. 4.30 × 125 =
5. 5.36 × 65 =
6. 6.75 × 24 =
7. 7.25 × 40 =
8. 8.6 × 45 =
9. 9.35 × 34 =
10. 10.40 × 25 =
11. 11.10 × 75 =
12. 12.25 × 22 =
13. 13.26 × 75 =
14. 14.35 × 26 =
15. 15.45 × 18 =
16. 16.45 × 18 =
17. 17.35 × 8 =
18. 18.45 × 34 =
19. 19.16 × 45 =
20. 20.35 × 10 =
21. 21.45 × 24 =
22. 22.22 × 35 =
23. 23.34 × 65 =
24. 24.15 × 30 =
25. 25.55 × 32 =
26. 26.65 × 22 =
27. 27.55 × 12 =
28. 28.18 × 15 =
29. 29.35 × 34 =
30. 30.30 × 75 =
31. 31.15 × 34 =
32. 32.14 × 15 =
33. 33.125 × 20 =
34. 34.40 × 15 =
35. 35.40 × 75 =
36. 36.20 × 45 =
37. 37.24 × 45 =
38. 38.35 × 6 =
39. 39.24 × 15 =
40. 40.18 × 125 =

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