Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 959 · 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. 1.35 × 32 =
2. 2.22 × 15 =
3. 3.125 × 6 =
4. 4.25 × 26 =
5. 5.35 × 22 =
6. 6.26 × 25 =
7. 7.24 × 35 =
8. 8.35 × 6 =
9. 9.18 × 65 =
10. 10.38 × 15 =
11. 11.34 × 35 =
12. 12.24 × 35 =
13. 13.75 × 14 =
14. 14.24 × 65 =
15. 15.15 × 36 =
16. 16.65 × 24 =
17. 17.125 × 24 =
18. 18.15 × 40 =
19. 19.8 × 35 =
20. 20.55 × 24 =
21. 21.15 × 26 =
22. 22.125 × 28 =
23. 23.75 × 6 =
24. 24.75 × 22 =
25. 25.125 × 18 =
26. 26.12 × 15 =
27. 27.26 × 15 =
28. 28.35 × 24 =
29. 29.65 × 24 =
30. 30.35 × 32 =
31. 31.40 × 45 =
32. 32.10 × 35 =
33. 33.22 × 25 =
34. 34.18 × 75 =
35. 35.18 × 125 =
36. 36.25 × 10 =
37. 37.35 × 12 =
38. 38.35 × 40 =
39. 39.65 × 24 =
40. 40.6 × 55 =

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