Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 297 · 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. 1.10 × 35 =
2. 2.35 × 22 =
3. 3.8 × 35 =
4. 4.15 × 14 =
5. 5.35 × 14 =
6. 6.38 × 125 =
7. 7.125 × 18 =
8. 8.55 × 34 =
9. 9.35 × 28 =
10. 10.35 × 12 =
11. 11.35 × 10 =
12. 12.55 × 12 =
13. 13.30 × 35 =
14. 14.55 × 38 =
15. 15.55 × 14 =
16. 16.18 × 65 =
17. 17.45 × 24 =
18. 18.10 × 45 =
19. 19.15 × 32 =
20. 20.20 × 15 =
21. 21.35 × 20 =
22. 22.45 × 40 =
23. 23.55 × 32 =
24. 24.40 × 35 =
25. 25.25 × 10 =
26. 26.15 × 40 =
27. 27.8 × 35 =
28. 28.6 × 75 =
29. 29.35 × 40 =
30. 30.15 × 12 =
31. 31.26 × 65 =
32. 32.25 × 6 =
33. 33.28 × 65 =
34. 34.30 × 25 =
35. 35.55 × 22 =
36. 36.125 × 6 =
37. 37.55 × 12 =
38. 38.55 × 22 =
39. 39.20 × 25 =
40. 40.14 × 45 =

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