Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 952 · 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. 1.24 × 35 =
2. 2.125 × 26 =
3. 3.125 × 6 =
4. 4.65 × 20 =
5. 5.75 × 24 =
6. 6.24 × 55 =
7. 7.55 × 30 =
8. 8.15 × 34 =
9. 9.30 × 35 =
10. 10.20 × 65 =
11. 11.75 × 24 =
12. 12.14 × 125 =
13. 13.10 × 75 =
14. 14.125 × 8 =
15. 15.125 × 18 =
16. 16.55 × 8 =
17. 17.45 × 12 =
18. 18.65 × 32 =
19. 19.14 × 125 =
20. 20.38 × 35 =
21. 21.15 × 34 =
22. 22.45 × 10 =
23. 23.36 × 35 =
24. 24.25 × 8 =
25. 25.45 × 36 =
26. 26.10 × 25 =
27. 27.25 × 32 =
28. 28.65 × 10 =
29. 29.12 × 75 =
30. 30.55 × 26 =
31. 31.25 × 22 =
32. 32.28 × 15 =
33. 33.8 × 125 =
34. 34.15 × 8 =
35. 35.26 × 55 =
36. 36.14 × 35 =
37. 37.75 × 20 =
38. 38.12 × 55 =
39. 39.30 × 65 =
40. 40.30 × 35 =

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