Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 734 · 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 × 22 =
2. 2.36 × 75 =
3. 3.65 × 28 =
4. 4.20 × 15 =
5. 5.6 × 125 =
6. 6.35 × 24 =
7. 7.45 × 10 =
8. 8.32 × 25 =
9. 9.20 × 75 =
10. 10.75 × 16 =
11. 11.25 × 34 =
12. 12.55 × 28 =
13. 13.10 × 35 =
14. 14.28 × 25 =
15. 15.35 × 16 =
16. 16.8 × 15 =
17. 17.10 × 75 =
18. 18.24 × 55 =
19. 19.26 × 45 =
20. 20.55 × 34 =
21. 21.8 × 55 =
22. 22.28 × 25 =
23. 23.35 × 18 =
24. 24.15 × 36 =
25. 25.18 × 35 =
26. 26.125 × 32 =
27. 27.28 × 35 =
28. 28.25 × 36 =
29. 29.10 × 125 =
30. 30.22 × 55 =
31. 31.55 × 10 =
32. 32.15 × 38 =
33. 33.25 × 20 =
34. 34.65 × 16 =
35. 35.34 × 55 =
36. 36.125 × 14 =
37. 37.125 × 30 =
38. 38.45 × 18 =
39. 39.16 × 125 =
40. 40.35 × 36 =

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