Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 45 · 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. 1.12 × 15 =
2. 2.37 × 15 =
3. 3.34 × 15 =
4. 4.16 × 15 =
5. 5.21 × 15 =
6. 6.53 × 15 =
7. 7.63 × 15 =
8. 8.57 × 15 =
9. 9.52 × 15 =
10. 10.60 × 15 =
11. 11.24 × 15 =
12. 12.55 × 15 =
13. 13.15 × 15 =
14. 14.40 × 15 =
15. 15.45 × 15 =
16. 16.53 × 15 =
17. 17.27 × 15 =
18. 18.24 × 15 =
19. 19.12 × 15 =
20. 20.12 × 15 =
21. 21.7 × 15 =
22. 22.9 × 15 =
23. 23.13 × 15 =
24. 24.60 × 15 =
25. 25.55 × 15 =
26. 26.42 × 15 =
27. 27.4 × 15 =
28. 28.19 × 15 =
29. 29.15 × 15 =
30. 30.34 × 15 =
31. 31.11 × 15 =
32. 32.8 × 15 =
33. 33.63 × 15 =
34. 34.25 × 15 =
35. 35.48 × 15 =
36. 36.54 × 15 =
37. 37.8 × 15 =
38. 38.6 × 15 =
39. 39.62 × 15 =
40. 40.50 × 15 =

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