Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 182 · 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. 1.35 × 6 =
2. 2.32 × 45 =
3. 3.15 × 34 =
4. 4.38 × 35 =
5. 5.35 × 32 =
6. 6.12 × 15 =
7. 7.18 × 35 =
8. 8.25 × 36 =
9. 9.15 × 8 =
10. 10.65 × 24 =
11. 11.65 × 10 =
12. 12.26 × 125 =
13. 13.34 × 65 =
14. 14.25 × 40 =
15. 15.25 × 14 =
16. 16.34 × 125 =
17. 17.125 × 30 =
18. 18.30 × 35 =
19. 19.6 × 55 =
20. 20.65 × 12 =
21. 21.24 × 25 =
22. 22.14 × 45 =
23. 23.8 × 125 =
24. 24.75 × 22 =
25. 25.25 × 14 =
26. 26.35 × 18 =
27. 27.12 × 15 =
28. 28.45 × 10 =
29. 29.16 × 65 =
30. 30.30 × 35 =
31. 31.16 × 35 =
32. 32.6 × 15 =
33. 33.125 × 10 =
34. 34.32 × 55 =
35. 35.14 × 45 =
36. 36.35 × 34 =
37. 37.12 × 35 =
38. 38.15 × 12 =
39. 39.32 × 65 =
40. 40.12 × 75 =

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