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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 295 · 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. 1.27 × 15 =
  2. 2.52 × 15 =
  3. 3.58 × 15 =
  4. 4.60 × 15 =
  5. 5.25 × 15 =
  6. 6.33 × 15 =
  7. 7.64 × 15 =
  8. 8.5 × 15 =
  9. 9.26 × 15 =
  10. 10.10 × 15 =
  11. 11.29 × 15 =
  12. 12.43 × 15 =
  13. 13.8 × 15 =
  14. 14.55 × 15 =
  15. 15.30 × 15 =
  16. 16.42 × 15 =
  17. 17.53 × 15 =
  18. 18.54 × 15 =
  19. 19.13 × 15 =
  20. 20.62 × 15 =
  21. 21.6 × 15 =
  22. 22.52 × 15 =
  23. 23.45 × 15 =
  24. 24.41 × 15 =
  25. 25.62 × 15 =
  26. 26.22 × 15 =
  27. 27.11 × 15 =
  28. 28.51 × 15 =
  29. 29.55 × 15 =
  30. 30.7 × 15 =
  31. 31.31 × 15 =
  32. 32.19 × 15 =
  33. 33.63 × 15 =
  34. 34.8 × 15 =
  35. 35.25 × 15 =
  36. 36.12 × 15 =
  37. 37.45 × 15 =
  38. 38.45 × 15 =
  39. 39.4 × 15 =
  40. 40.7 × 15 =

Answer key

  1. 405
  2. 780
  3. 870
  4. 900
  5. 375
  6. 495
  7. 960
  8. 75
  9. 390
  10. 150
  11. 435
  12. 645
  13. 120
  14. 825
  15. 450
  16. 630
  17. 795
  18. 810
  19. 195
  20. 930
  21. 90
  22. 780
  23. 675
  24. 615
  25. 930
  26. 330
  27. 165
  28. 765
  29. 825
  30. 105
  31. 465
  32. 285
  33. 945
  34. 120
  35. 375
  36. 180
  37. 675
  38. 675
  39. 60
  40. 105

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