Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 58 · 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 × 75 =
2. 2.18 × 75 =
3. 3.65 × 12 =
4. 4.26 × 55 =
5. 5.25 × 14 =
6. 6.25 × 22 =
7. 7.8 × 55 =
8. 8.65 × 10 =
9. 9.10 × 55 =
10. 10.10 × 25 =
11. 11.125 × 6 =
12. 12.6 × 35 =
13. 13.25 × 8 =
14. 14.35 × 32 =
15. 15.32 × 25 =
16. 16.36 × 45 =
17. 17.18 × 25 =
18. 18.14 × 75 =
19. 19.20 × 65 =
20. 20.20 × 75 =
21. 21.35 × 30 =
22. 22.14 × 25 =
23. 23.125 × 22 =
24. 24.32 × 35 =
25. 25.25 × 12 =
26. 26.24 × 125 =
27. 27.32 × 55 =
28. 28.65 × 12 =
29. 29.35 × 22 =
30. 30.16 × 65 =
31. 31.55 × 32 =
32. 32.45 × 36 =
33. 33.25 × 34 =
34. 34.20 × 45 =
35. 35.75 × 34 =
36. 36.55 × 16 =
37. 37.55 × 14 =
38. 38.28 × 75 =
39. 39.75 × 32 =
40. 40.15 × 8 =

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