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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 799 · 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. 1.33 × 15 =
  2. 2.13 × 15 =
  3. 3.13 × 15 =
  4. 4.49 × 15 =
  5. 5.28 × 15 =
  6. 6.26 × 15 =
  7. 7.48 × 15 =
  8. 8.8 × 15 =
  9. 9.4 × 15 =
  10. 10.16 × 15 =
  11. 11.11 × 15 =
  12. 12.42 × 15 =
  13. 13.44 × 15 =
  14. 14.10 × 15 =
  15. 15.9 × 15 =
  16. 16.4 × 15 =
  17. 17.62 × 15 =
  18. 18.13 × 15 =
  19. 19.42 × 15 =
  20. 20.64 × 15 =
  21. 21.43 × 15 =
  22. 22.4 × 15 =
  23. 23.64 × 15 =
  24. 24.16 × 15 =
  25. 25.7 × 15 =
  26. 26.59 × 15 =
  27. 27.55 × 15 =
  28. 28.21 × 15 =
  29. 29.28 × 15 =
  30. 30.13 × 15 =
  31. 31.19 × 15 =
  32. 32.52 × 15 =
  33. 33.6 × 15 =
  34. 34.23 × 15 =
  35. 35.8 × 15 =
  36. 36.42 × 15 =
  37. 37.28 × 15 =
  38. 38.53 × 15 =
  39. 39.35 × 15 =
  40. 40.37 × 15 =

Answer key

  1. 495
  2. 195
  3. 195
  4. 735
  5. 420
  6. 390
  7. 720
  8. 120
  9. 60
  10. 240
  11. 165
  12. 630
  13. 660
  14. 150
  15. 135
  16. 60
  17. 930
  18. 195
  19. 630
  20. 960
  21. 645
  22. 60
  23. 960
  24. 240
  25. 105
  26. 885
  27. 825
  28. 315
  29. 420
  30. 195
  31. 285
  32. 780
  33. 90
  34. 345
  35. 120
  36. 630
  37. 420
  38. 795
  39. 525
  40. 555

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