Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 489 · 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. 1.51 × 15 =
2. 2.17 × 15 =
3. 3.19 × 15 =
4. 4.55 × 15 =
5. 5.10 × 15 =
6. 6.42 × 15 =
7. 7.41 × 15 =
8. 8.40 × 15 =
9. 9.19 × 15 =
10. 10.7 × 15 =
11. 11.43 × 15 =
12. 12.18 × 15 =
13. 13.21 × 15 =
14. 14.15 × 15 =
15. 15.17 × 15 =
16. 16.9 × 15 =
17. 17.21 × 15 =
18. 18.57 × 15 =
19. 19.34 × 15 =
20. 20.60 × 15 =
21. 21.21 × 15 =
22. 22.21 × 15 =
23. 23.44 × 15 =
24. 24.45 × 15 =
25. 25.9 × 15 =
26. 26.27 × 15 =
27. 27.5 × 15 =
28. 28.51 × 15 =
29. 29.63 × 15 =
30. 30.32 × 15 =
31. 31.11 × 15 =
32. 32.5 × 15 =
33. 33.11 × 15 =
34. 34.21 × 15 =
35. 35.23 × 15 =
36. 36.14 × 15 =
37. 37.5 × 15 =
38. 38.35 × 15 =
39. 39.10 × 15 =
40. 40.29 × 15 =

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