Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 743 · 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. 1.125 × 14 =
2. 2.16 × 75 =
3. 3.12 × 125 =
4. 4.26 × 45 =
5. 5.55 × 26 =
6. 6.45 × 16 =
7. 7.18 × 15 =
8. 8.35 × 18 =
9. 9.6 × 15 =
10. 10.35 × 18 =
11. 11.34 × 125 =
12. 12.35 × 38 =
13. 13.75 × 10 =
14. 14.26 × 15 =
15. 15.15 × 30 =
16. 16.26 × 15 =
17. 17.25 × 32 =
18. 18.40 × 45 =
19. 19.34 × 125 =
20. 20.16 × 125 =
21. 21.6 × 75 =
22. 22.8 × 65 =
23. 23.36 × 65 =
24. 24.35 × 12 =
25. 25.75 × 38 =
26. 26.20 × 45 =
27. 27.125 × 36 =
28. 28.75 × 6 =
29. 29.34 × 25 =
30. 30.6 × 55 =
31. 31.40 × 55 =
32. 32.35 × 10 =
33. 33.125 × 12 =
34. 34.75 × 34 =
35. 35.12 × 75 =
36. 36.14 × 65 =
37. 37.28 × 25 =
38. 38.26 × 65 =
39. 39.125 × 12 =
40. 40.38 × 125 =

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