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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 501 · 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. 2.9 × 15 =
  3. 3.37 × 15 =
  4. 4.33 × 15 =
  5. 5.35 × 15 =
  6. 6.27 × 15 =
  7. 7.22 × 15 =
  8. 8.51 × 15 =
  9. 9.56 × 15 =
  10. 10.35 × 15 =
  11. 11.64 × 15 =
  12. 12.55 × 15 =
  13. 13.28 × 15 =
  14. 14.19 × 15 =
  15. 15.8 × 15 =
  16. 16.64 × 15 =
  17. 17.35 × 15 =
  18. 18.56 × 15 =
  19. 19.17 × 15 =
  20. 20.56 × 15 =
  21. 21.50 × 15 =
  22. 22.19 × 15 =
  23. 23.30 × 15 =
  24. 24.59 × 15 =
  25. 25.17 × 15 =
  26. 26.49 × 15 =
  27. 27.34 × 15 =
  28. 28.50 × 15 =
  29. 29.56 × 15 =
  30. 30.24 × 15 =
  31. 31.31 × 15 =
  32. 32.31 × 15 =
  33. 33.32 × 15 =
  34. 34.62 × 15 =
  35. 35.40 × 15 =
  36. 36.12 × 15 =
  37. 37.56 × 15 =
  38. 38.30 × 15 =
  39. 39.8 × 15 =
  40. 40.14 × 15 =

Answer key

  1. 405
  2. 135
  3. 555
  4. 495
  5. 525
  6. 405
  7. 330
  8. 765
  9. 840
  10. 525
  11. 960
  12. 825
  13. 420
  14. 285
  15. 120
  16. 960
  17. 525
  18. 840
  19. 255
  20. 840
  21. 750
  22. 285
  23. 450
  24. 885
  25. 255
  26. 735
  27. 510
  28. 750
  29. 840
  30. 360
  31. 465
  32. 465
  33. 480
  34. 930
  35. 600
  36. 180
  37. 840
  38. 450
  39. 120
  40. 210

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