Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 305 · 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. 1.26 × 35 =
2. 2.45 × 38 =
3. 3.55 × 34 =
4. 4.32 × 125 =
5. 5.40 × 75 =
6. 6.18 × 65 =
7. 7.28 × 55 =
8. 8.12 × 15 =
9. 9.30 × 25 =
10. 10.20 × 45 =
11. 11.6 × 125 =
12. 12.25 × 38 =
13. 13.15 × 34 =
14. 14.65 × 16 =
15. 15.24 × 75 =
16. 16.30 × 15 =
17. 17.65 × 28 =
18. 18.38 × 125 =
19. 19.75 × 10 =
20. 20.15 × 34 =
21. 21.14 × 25 =
22. 22.45 × 34 =
23. 23.35 × 20 =
24. 24.35 × 10 =
25. 25.75 × 8 =
26. 26.75 × 38 =
27. 27.45 × 16 =
28. 28.125 × 32 =
29. 29.30 × 65 =
30. 30.34 × 35 =
31. 31.75 × 30 =
32. 32.25 × 18 =
33. 33.75 × 6 =
34. 34.12 × 15 =
35. 35.20 × 15 =
36. 36.10 × 75 =
37. 37.15 × 16 =
38. 38.25 × 12 =
39. 39.15 × 20 =
40. 40.15 × 26 =

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