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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 126 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.35 × 15 =
  2. 2.49 × 15 =
  3. 3.33 × 15 =
  4. 4.23 × 15 =
  5. 5.63 × 15 =
  6. 6.42 × 15 =
  7. 7.13 × 15 =
  8. 8.64 × 15 =
  9. 9.51 × 15 =
  10. 10.55 × 15 =
  11. 11.31 × 15 =
  12. 12.31 × 15 =
  13. 13.17 × 15 =
  14. 14.64 × 15 =
  15. 15.9 × 15 =
  16. 16.25 × 15 =
  17. 17.9 × 15 =
  18. 18.16 × 15 =
  19. 19.14 × 15 =
  20. 20.45 × 15 =
  21. 21.37 × 15 =
  22. 22.15 × 15 =
  23. 23.25 × 15 =
  24. 24.38 × 15 =
  25. 25.46 × 15 =
  26. 26.15 × 15 =
  27. 27.20 × 15 =
  28. 28.53 × 15 =
  29. 29.14 × 15 =
  30. 30.61 × 15 =
  31. 31.62 × 15 =
  32. 32.22 × 15 =
  33. 33.9 × 15 =
  34. 34.7 × 15 =
  35. 35.11 × 15 =
  36. 36.63 × 15 =
  37. 37.41 × 15 =
  38. 38.6 × 15 =
  39. 39.24 × 15 =
  40. 40.34 × 15 =

Answer key

  1. 525
  2. 735
  3. 495
  4. 345
  5. 945
  6. 630
  7. 195
  8. 960
  9. 765
  10. 825
  11. 465
  12. 465
  13. 255
  14. 960
  15. 135
  16. 375
  17. 135
  18. 240
  19. 210
  20. 675
  21. 555
  22. 225
  23. 375
  24. 570
  25. 690
  26. 225
  27. 300
  28. 795
  29. 210
  30. 915
  31. 930
  32. 330
  33. 135
  34. 105
  35. 165
  36. 945
  37. 615
  38. 90
  39. 360
  40. 510

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