Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 166 · 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. 1.45 × 6 =
2. 2.14 × 25 =
3. 3.125 × 6 =
4. 4.35 × 26 =
5. 5.15 × 18 =
6. 6.6 × 75 =
7. 7.18 × 15 =
8. 8.24 × 35 =
9. 9.24 × 15 =
10. 10.55 × 36 =
11. 11.125 × 10 =
12. 12.35 × 16 =
13. 13.55 × 40 =
14. 14.10 × 15 =
15. 15.32 × 75 =
16. 16.18 × 65 =
17. 17.35 × 16 =
18. 18.15 × 20 =
19. 19.32 × 45 =
20. 20.36 × 15 =
21. 21.30 × 65 =
22. 22.34 × 55 =
23. 23.36 × 75 =
24. 24.15 × 34 =
25. 25.25 × 16 =
26. 26.18 × 65 =
27. 27.30 × 55 =
28. 28.24 × 125 =
29. 29.15 × 36 =
30. 30.45 × 34 =
31. 31.8 × 55 =
32. 32.36 × 15 =
33. 33.12 × 35 =
34. 34.30 × 55 =
35. 35.36 × 75 =
36. 36.35 × 38 =
37. 37.8 × 55 =
38. 38.35 × 40 =
39. 39.14 × 15 =
40. 40.32 × 65 =

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