Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 678 · 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. 1.7 × 15 =
2. 2.31 × 15 =
3. 3.4 × 15 =
4. 4.18 × 15 =
5. 5.29 × 15 =
6. 6.44 × 15 =
7. 7.55 × 15 =
8. 8.61 × 15 =
9. 9.51 × 15 =
10. 10.43 × 15 =
11. 11.32 × 15 =
12. 12.41 × 15 =
13. 13.29 × 15 =
14. 14.43 × 15 =
15. 15.6 × 15 =
16. 16.6 × 15 =
17. 17.45 × 15 =
18. 18.45 × 15 =
19. 19.37 × 15 =
20. 20.6 × 15 =
21. 21.64 × 15 =
22. 22.30 × 15 =
23. 23.18 × 15 =
24. 24.44 × 15 =
25. 25.47 × 15 =
26. 26.9 × 15 =
27. 27.41 × 15 =
28. 28.25 × 15 =
29. 29.39 × 15 =
30. 30.15 × 15 =
31. 31.38 × 15 =
32. 32.9 × 15 =
33. 33.54 × 15 =
34. 34.9 × 15 =
35. 35.24 × 15 =
36. 36.7 × 15 =
37. 37.62 × 15 =
38. 38.38 × 15 =
39. 39.47 × 15 =
40. 40.18 × 15 =

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