Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 47 · 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. 1.9 × 15 =
2. 2.36 × 15 =
3. 3.10 × 15 =
4. 4.11 × 15 =
5. 5.57 × 15 =
6. 6.34 × 15 =
7. 7.21 × 15 =
8. 8.5 × 15 =
9. 9.61 × 15 =
10. 10.32 × 15 =
11. 11.18 × 15 =
12. 12.59 × 15 =
13. 13.13 × 15 =
14. 14.29 × 15 =
15. 15.16 × 15 =
16. 16.13 × 15 =
17. 17.63 × 15 =
18. 18.21 × 15 =
19. 19.9 × 15 =
20. 20.60 × 15 =
21. 21.54 × 15 =
22. 22.9 × 15 =
23. 23.21 × 15 =
24. 24.46 × 15 =
25. 25.8 × 15 =
26. 26.8 × 15 =
27. 27.5 × 15 =
28. 28.42 × 15 =
29. 29.32 × 15 =
30. 30.46 × 15 =
31. 31.47 × 15 =
32. 32.6 × 15 =
33. 33.44 × 15 =
34. 34.16 × 15 =
35. 35.29 × 15 =
36. 36.12 × 15 =
37. 37.22 × 15 =
38. 38.58 × 15 =
39. 39.55 × 15 =
40. 40.25 × 15 =

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