Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 47 · 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. 2.15 × 10 =
3. 3.10 × 125 =
4. 4.20 × 65 =
5. 5.125 × 18 =
6. 6.45 × 18 =
7. 7.30 × 65 =
8. 8.55 × 40 =
9. 9.34 × 75 =
10. 10.25 × 18 =
11. 11.22 × 125 =
12. 12.34 × 15 =
13. 13.15 × 36 =
14. 14.65 × 6 =
15. 15.12 × 25 =
16. 16.15 × 32 =
17. 17.45 × 16 =
18. 18.6 × 125 =
19. 19.55 × 20 =
20. 20.45 × 32 =
21. 21.36 × 25 =
22. 22.6 × 55 =
23. 23.15 × 16 =
24. 24.22 × 55 =
25. 25.8 × 15 =
26. 26.32 × 125 =
27. 27.10 × 65 =
28. 28.25 × 26 =
29. 29.38 × 65 =
30. 30.55 × 18 =
31. 31.8 × 25 =
32. 32.6 × 25 =
33. 33.14 × 35 =
34. 34.45 × 6 =
35. 35.25 × 14 =
36. 36.75 × 16 =
37. 37.15 × 30 =
38. 38.35 × 34 =
39. 39.15 × 28 =
40. 40.35 × 34 =

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