Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 278 · 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 × 125 =
2. 2.14 × 125 =
3. 3.45 × 34 =
4. 4.55 × 24 =
5. 5.8 × 55 =
6. 6.35 × 36 =
7. 7.30 × 125 =
8. 8.34 × 125 =
9. 9.22 × 45 =
10. 10.65 × 28 =
11. 11.14 × 45 =
12. 12.24 × 45 =
13. 13.125 × 40 =
14. 14.25 × 26 =
15. 15.55 × 20 =
16. 16.35 × 36 =
17. 17.8 × 25 =
18. 18.55 × 32 =
19. 19.25 × 14 =
20. 20.38 × 45 =
21. 21.15 × 12 =
22. 22.55 × 24 =
23. 23.45 × 30 =
24. 24.55 × 36 =
25. 25.12 × 35 =
26. 26.35 × 18 =
27. 27.12 × 65 =
28. 28.35 × 22 =
29. 29.30 × 55 =
30. 30.36 × 65 =
31. 31.40 × 35 =
32. 32.16 × 35 =
33. 33.125 × 38 =
34. 34.75 × 28 =
35. 35.8 × 125 =
36. 36.30 × 45 =
37. 37.55 × 20 =
38. 38.75 × 6 =
39. 39.8 × 55 =
40. 40.16 × 15 =

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