Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 922 · 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. 1.34 × 15 =
2. 2.28 × 35 =
3. 3.38 × 125 =
4. 4.25 × 12 =
5. 5.40 × 75 =
6. 6.125 × 12 =
7. 7.15 × 14 =
8. 8.26 × 25 =
9. 9.35 × 26 =
10. 10.55 × 6 =
11. 11.18 × 15 =
12. 12.6 × 125 =
13. 13.55 × 34 =
14. 14.6 × 15 =
15. 15.18 × 35 =
16. 16.75 × 12 =
17. 17.26 × 45 =
18. 18.65 × 34 =
19. 19.34 × 45 =
20. 20.32 × 65 =
21. 21.15 × 6 =
22. 22.55 × 24 =
23. 23.10 × 75 =
24. 24.15 × 26 =
25. 25.25 × 34 =
26. 26.25 × 18 =
27. 27.35 × 18 =
28. 28.35 × 36 =
29. 29.55 × 8 =
30. 30.32 × 15 =
31. 31.12 × 55 =
32. 32.6 × 15 =
33. 33.14 × 25 =
34. 34.35 × 40 =
35. 35.45 × 18 =
36. 36.14 × 35 =
37. 37.8 × 75 =
38. 38.16 × 75 =
39. 39.75 × 12 =
40. 40.14 × 75 =

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