Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 996 · 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 × 32 =
2. 2.55 × 24 =
3. 3.35 × 6 =
4. 4.75 × 10 =
5. 5.15 × 14 =
6. 6.28 × 65 =
7. 7.8 × 125 =
8. 8.28 × 75 =
9. 9.25 × 12 =
10. 10.35 × 34 =
11. 11.125 × 26 =
12. 12.32 × 15 =
13. 13.15 × 36 =
14. 14.34 × 15 =
15. 15.16 × 25 =
16. 16.15 × 30 =
17. 17.38 × 55 =
18. 18.75 × 16 =
19. 19.65 × 32 =
20. 20.18 × 55 =
21. 21.12 × 35 =
22. 22.22 × 55 =
23. 23.24 × 75 =
24. 24.55 × 22 =
25. 25.24 × 15 =
26. 26.26 × 65 =
27. 27.20 × 15 =
28. 28.25 × 34 =
29. 29.45 × 28 =
30. 30.35 × 8 =
31. 31.35 × 36 =
32. 32.30 × 55 =
33. 33.35 × 16 =
34. 34.75 × 26 =
35. 35.65 × 22 =
36. 36.55 × 10 =
37. 37.38 × 45 =
38. 38.14 × 35 =
39. 39.55 × 26 =
40. 40.10 × 15 =

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