Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 927 · 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. 1.25 × 36 =
2. 2.55 × 24 =
3. 3.26 × 25 =
4. 4.25 × 22 =
5. 5.45 × 14 =
6. 6.75 × 28 =
7. 7.45 × 8 =
8. 8.20 × 75 =
9. 9.14 × 35 =
10. 10.38 × 25 =
11. 11.65 × 14 =
12. 12.75 × 6 =
13. 13.55 × 40 =
14. 14.75 × 28 =
15. 15.40 × 45 =
16. 16.45 × 38 =
17. 17.24 × 35 =
18. 18.15 × 34 =
19. 19.75 × 26 =
20. 20.55 × 40 =
21. 21.45 × 6 =
22. 22.65 × 26 =
23. 23.45 × 22 =
24. 24.55 × 28 =
25. 25.6 × 45 =
26. 26.34 × 75 =
27. 27.35 × 16 =
28. 28.65 × 12 =
29. 29.40 × 75 =
30. 30.6 × 75 =
31. 31.15 × 30 =
32. 32.45 × 32 =
33. 33.35 × 36 =
34. 34.32 × 45 =
35. 35.75 × 26 =
36. 36.16 × 125 =
37. 37.8 × 35 =
38. 38.12 × 55 =
39. 39.55 × 10 =
40. 40.25 × 16 =

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