Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 376 · 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. 1.12 × 35 =
2. 2.25 × 6 =
3. 3.65 × 38 =
4. 4.8 × 55 =
5. 5.45 × 16 =
6. 6.36 × 55 =
7. 7.34 × 65 =
8. 8.15 × 24 =
9. 9.25 × 20 =
10. 10.25 × 18 =
11. 11.8 × 35 =
12. 12.45 × 8 =
13. 13.30 × 25 =
14. 14.28 × 45 =
15. 15.35 × 8 =
16. 16.34 × 125 =
17. 17.24 × 125 =
18. 18.45 × 32 =
19. 19.20 × 65 =
20. 20.15 × 22 =
21. 21.55 × 6 =
22. 22.38 × 55 =
23. 23.45 × 18 =
24. 24.125 × 14 =
25. 25.125 × 40 =
26. 26.30 × 75 =
27. 27.125 × 24 =
28. 28.125 × 12 =
29. 29.30 × 65 =
30. 30.18 × 15 =
31. 31.45 × 34 =
32. 32.30 × 25 =
33. 33.25 × 26 =
34. 34.25 × 16 =
35. 35.20 × 15 =
36. 36.14 × 125 =
37. 37.25 × 36 =
38. 38.38 × 125 =
39. 39.6 × 25 =
40. 40.45 × 16 =

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