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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 772 · 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. 2.24 × 15 =
  3. 3.60 × 15 =
  4. 4.46 × 15 =
  5. 5.59 × 15 =
  6. 6.61 × 15 =
  7. 7.42 × 15 =
  8. 8.36 × 15 =
  9. 9.51 × 15 =
  10. 10.16 × 15 =
  11. 11.28 × 15 =
  12. 12.58 × 15 =
  13. 13.15 × 15 =
  14. 14.63 × 15 =
  15. 15.40 × 15 =
  16. 16.52 × 15 =
  17. 17.42 × 15 =
  18. 18.48 × 15 =
  19. 19.19 × 15 =
  20. 20.40 × 15 =
  21. 21.19 × 15 =
  22. 22.34 × 15 =
  23. 23.34 × 15 =
  24. 24.32 × 15 =
  25. 25.23 × 15 =
  26. 26.10 × 15 =
  27. 27.18 × 15 =
  28. 28.39 × 15 =
  29. 29.15 × 15 =
  30. 30.4 × 15 =
  31. 31.46 × 15 =
  32. 32.57 × 15 =
  33. 33.37 × 15 =
  34. 34.48 × 15 =
  35. 35.51 × 15 =
  36. 36.10 × 15 =
  37. 37.15 × 15 =
  38. 38.16 × 15 =
  39. 39.10 × 15 =
  40. 40.34 × 15 =

Answer key

  1. 525
  2. 360
  3. 900
  4. 690
  5. 885
  6. 915
  7. 630
  8. 540
  9. 765
  10. 240
  11. 420
  12. 870
  13. 225
  14. 945
  15. 600
  16. 780
  17. 630
  18. 720
  19. 285
  20. 600
  21. 285
  22. 510
  23. 510
  24. 480
  25. 345
  26. 150
  27. 270
  28. 585
  29. 225
  30. 60
  31. 690
  32. 855
  33. 555
  34. 720
  35. 765
  36. 150
  37. 225
  38. 240
  39. 150
  40. 510

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