Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 777 · 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 × 14 =
2. 2.14 × 35 =
3. 3.35 × 20 =
4. 4.45 × 8 =
5. 5.6 × 45 =
6. 6.10 × 75 =
7. 7.25 × 6 =
8. 8.55 × 28 =
9. 9.35 × 38 =
10. 10.15 × 16 =
11. 11.8 × 55 =
12. 12.45 × 18 =
13. 13.12 × 15 =
14. 14.25 × 14 =
15. 15.14 × 75 =
16. 16.10 × 55 =
17. 17.36 × 65 =
18. 18.65 × 22 =
19. 19.45 × 16 =
20. 20.25 × 6 =
21. 21.55 × 36 =
22. 22.65 × 12 =
23. 23.34 × 45 =
24. 24.24 × 15 =
25. 25.65 × 26 =
26. 26.15 × 6 =
27. 27.35 × 6 =
28. 28.22 × 125 =
29. 29.20 × 125 =
30. 30.30 × 55 =
31. 31.38 × 45 =
32. 32.18 × 65 =
33. 33.18 × 55 =
34. 34.125 × 36 =
35. 35.125 × 38 =
36. 36.65 × 40 =
37. 37.22 × 65 =
38. 38.6 × 35 =
39. 39.25 × 14 =
40. 40.6 × 15 =

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