Doubling and Halving Worksheet

Tables & multiplication lesson 14: Doubling and halving · Set 528 · 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 × 35 =
2. 2.25 × 26 =
3. 3.8 × 15 =
4. 4.24 × 65 =
5. 5.12 × 75 =
6. 6.22 × 35 =
7. 7.55 × 26 =
8. 8.24 × 45 =
9. 9.32 × 25 =
10. 10.45 × 16 =
11. 11.38 × 35 =
12. 12.34 × 75 =
13. 13.40 × 15 =
14. 14.15 × 34 =
15. 15.22 × 75 =
16. 16.22 × 25 =
17. 17.10 × 125 =
18. 18.36 × 65 =
19. 19.10 × 55 =
20. 20.40 × 35 =
21. 21.75 × 38 =
22. 22.45 × 34 =
23. 23.65 × 16 =
24. 24.40 × 65 =
25. 25.22 × 75 =
26. 26.22 × 45 =
27. 27.125 × 8 =
28. 28.65 × 36 =
29. 29.25 × 12 =
30. 30.15 × 36 =
31. 31.36 × 15 =
32. 32.28 × 25 =
33. 33.15 × 12 =
34. 34.15 × 16 =
35. 35.15 × 28 =
36. 36.34 × 15 =
37. 37.75 × 22 =
38. 38.35 × 34 =
39. 39.12 × 25 =
40. 40.22 × 75 =

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