Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 798 · 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 × 75 =
2. 2.75 × 36 =
3. 3.45 × 14 =
4. 4.30 × 35 =
5. 5.6 × 125 =
6. 6.16 × 45 =
7. 7.34 × 15 =
8. 8.25 × 32 =
9. 9.20 × 35 =
10. 10.18 × 55 =
11. 11.38 × 15 =
12. 12.55 × 32 =
13. 13.55 × 34 =
14. 14.22 × 35 =
15. 15.30 × 55 =
16. 16.40 × 25 =
17. 17.35 × 10 =
18. 18.6 × 45 =
19. 19.36 × 75 =
20. 20.18 × 15 =
21. 21.75 × 36 =
22. 22.35 × 32 =
23. 23.28 × 45 =
24. 24.45 × 24 =
25. 25.15 × 20 =
26. 26.35 × 40 =
27. 27.32 × 45 =
28. 28.10 × 15 =
29. 29.25 × 22 =
30. 30.35 × 30 =
31. 31.24 × 45 =
32. 32.45 × 26 =
33. 33.34 × 125 =
34. 34.35 × 26 =
35. 35.65 × 22 =
36. 36.24 × 65 =
37. 37.38 × 55 =
38. 38.40 × 75 =
39. 39.34 × 75 =
40. 40.34 × 55 =

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