Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 227 · 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 × 8 =
2. 2.55 × 12 =
3. 3.15 × 22 =
4. 4.32 × 25 =
5. 5.75 × 30 =
6. 6.30 × 35 =
7. 7.24 × 15 =
8. 8.15 × 36 =
9. 9.8 × 35 =
10. 10.15 × 30 =
11. 11.55 × 16 =
12. 12.65 × 32 =
13. 13.55 × 14 =
14. 14.15 × 40 =
15. 15.6 × 55 =
16. 16.14 × 65 =
17. 17.15 × 38 =
18. 18.18 × 75 =
19. 19.38 × 55 =
20. 20.38 × 15 =
21. 21.12 × 75 =
22. 22.38 × 65 =
23. 23.18 × 15 =
24. 24.25 × 32 =
25. 25.35 × 22 =
26. 26.15 × 30 =
27. 27.45 × 34 =
28. 28.35 × 40 =
29. 29.75 × 8 =
30. 30.55 × 24 =
31. 31.15 × 38 =
32. 32.65 × 12 =
33. 33.36 × 45 =
34. 34.65 × 14 =
35. 35.25 × 6 =
36. 36.45 × 6 =
37. 37.15 × 30 =
38. 38.30 × 25 =
39. 39.10 × 55 =
40. 40.36 × 55 =

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