Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 194 · 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. 1.45 × 6 =
2. 2.14 × 55 =
3. 3.35 × 20 =
4. 4.75 × 28 =
5. 5.125 × 10 =
6. 6.15 × 36 =
7. 7.25 × 10 =
8. 8.55 × 8 =
9. 9.14 × 35 =
10. 10.32 × 125 =
11. 11.25 × 30 =
12. 12.30 × 65 =
13. 13.125 × 26 =
14. 14.25 × 14 =
15. 15.45 × 24 =
16. 16.25 × 20 =
17. 17.45 × 38 =
18. 18.35 × 38 =
19. 19.6 × 35 =
20. 20.65 × 40 =
21. 21.22 × 45 =
22. 22.75 × 36 =
23. 23.25 × 16 =
24. 24.75 × 26 =
25. 25.75 × 14 =
26. 26.32 × 75 =
27. 27.40 × 55 =
28. 28.14 × 25 =
29. 29.25 × 22 =
30. 30.125 × 12 =
31. 31.8 × 35 =
32. 32.24 × 55 =
33. 33.75 × 10 =
34. 34.55 × 32 =
35. 35.55 × 22 =
36. 36.65 × 12 =
37. 37.55 × 30 =
38. 38.12 × 35 =
39. 39.32 × 15 =
40. 40.25 × 40 =

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