Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 365 · 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. 1.12 × 75 =
2. 2.35 × 18 =
3. 3.32 × 35 =
4. 4.35 × 30 =
5. 5.26 × 65 =
6. 6.6 × 55 =
7. 7.65 × 14 =
8. 8.15 × 14 =
9. 9.26 × 15 =
10. 10.20 × 25 =
11. 11.15 × 12 =
12. 12.6 × 55 =
13. 13.25 × 6 =
14. 14.26 × 55 =
15. 15.40 × 35 =
16. 16.8 × 25 =
17. 17.65 × 32 =
18. 18.38 × 65 =
19. 19.75 × 10 =
20. 20.6 × 55 =
21. 21.25 × 20 =
22. 22.45 × 34 =
23. 23.10 × 15 =
24. 24.34 × 125 =
25. 25.15 × 30 =
26. 26.25 × 40 =
27. 27.10 × 25 =
28. 28.12 × 25 =
29. 29.38 × 25 =
30. 30.12 × 45 =
31. 31.22 × 45 =
32. 32.14 × 75 =
33. 33.35 × 16 =
34. 34.28 × 45 =
35. 35.40 × 35 =
36. 36.75 × 16 =
37. 37.26 × 15 =
38. 38.30 × 25 =
39. 39.30 × 125 =
40. 40.45 × 34 =

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