Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 59 · 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. 1.125 × 38 =
2. 2.55 × 8 =
3. 3.22 × 15 =
4. 4.22 × 15 =
5. 5.65 × 10 =
6. 6.24 × 75 =
7. 7.55 × 26 =
8. 8.25 × 6 =
9. 9.6 × 35 =
10. 10.38 × 65 =
11. 11.45 × 30 =
12. 12.45 × 26 =
13. 13.75 × 28 =
14. 14.12 × 15 =
15. 15.18 × 35 =
16. 16.20 × 45 =
17. 17.12 × 55 =
18. 18.75 × 18 =
19. 19.25 × 32 =
20. 20.45 × 6 =
21. 21.40 × 55 =
22. 22.6 × 35 =
23. 23.55 × 20 =
24. 24.65 × 6 =
25. 25.75 × 10 =
26. 26.18 × 25 =
27. 27.55 × 10 =
28. 28.18 × 55 =
29. 29.40 × 75 =
30. 30.125 × 28 =
31. 31.26 × 35 =
32. 32.30 × 25 =
33. 33.55 × 22 =
34. 34.25 × 18 =
35. 35.75 × 24 =
36. 36.55 × 38 =
37. 37.25 × 34 =
38. 38.25 × 40 =
39. 39.75 × 6 =
40. 40.125 × 10 =

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