Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 203 · 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. 1.35 × 32 =
2. 2.10 × 15 =
3. 3.65 × 18 =
4. 4.125 × 18 =
5. 5.125 × 38 =
6. 6.22 × 35 =
7. 7.12 × 35 =
8. 8.25 × 32 =
9. 9.6 × 125 =
10. 10.125 × 12 =
11. 11.45 × 20 =
12. 12.30 × 35 =
13. 13.55 × 24 =
14. 14.25 × 20 =
15. 15.38 × 65 =
16. 16.12 × 125 =
17. 17.12 × 45 =
18. 18.30 × 55 =
19. 19.125 × 32 =
20. 20.32 × 45 =
21. 21.38 × 55 =
22. 22.55 × 14 =
23. 23.22 × 75 =
24. 24.26 × 15 =
25. 25.75 × 24 =
26. 26.20 × 65 =
27. 27.15 × 18 =
28. 28.6 × 35 =
29. 29.75 × 40 =
30. 30.30 × 35 =
31. 31.55 × 12 =
32. 32.25 × 18 =
33. 33.25 × 26 =
34. 34.15 × 38 =
35. 35.125 × 36 =
36. 36.75 × 30 =
37. 37.24 × 125 =
38. 38.45 × 26 =
39. 39.15 × 22 =
40. 40.25 × 12 =

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