Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 63 · 40 questions

The fast method (Ten and half again): Multiply by 10: 46 → 460. Halve that answer: half of 460 is 230. Add the two: 460 + 230 = 690.

1. 1.64 × 15 =
2. 2.61 × 15 =
3. 3.15 × 15 =
4. 4.32 × 15 =
5. 5.16 × 15 =
6. 6.23 × 15 =
7. 7.30 × 15 =
8. 8.27 × 15 =
9. 9.47 × 15 =
10. 10.11 × 15 =
11. 11.10 × 15 =
12. 12.37 × 15 =
13. 13.55 × 15 =
14. 14.29 × 15 =
15. 15.55 × 15 =
16. 16.20 × 15 =
17. 17.46 × 15 =
18. 18.19 × 15 =
19. 19.60 × 15 =
20. 20.64 × 15 =
21. 21.11 × 15 =
22. 22.32 × 15 =
23. 23.10 × 15 =
24. 24.50 × 15 =
25. 25.39 × 15 =
26. 26.34 × 15 =
27. 27.52 × 15 =
28. 28.64 × 15 =
29. 29.54 × 15 =
30. 30.40 × 15 =
31. 31.48 × 15 =
32. 32.28 × 15 =
33. 33.18 × 15 =
34. 34.28 × 15 =
35. 35.16 × 15 =
36. 36.56 × 15 =
37. 37.4 × 15 =
38. 38.12 × 15 =
39. 39.4 × 15 =
40. 40.9 × 15 =

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