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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 498 · 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. 1.44 × 15 =
  2. 2.5 × 15 =
  3. 3.47 × 15 =
  4. 4.37 × 15 =
  5. 5.53 × 15 =
  6. 6.8 × 15 =
  7. 7.43 × 15 =
  8. 8.19 × 15 =
  9. 9.28 × 15 =
  10. 10.15 × 15 =
  11. 11.9 × 15 =
  12. 12.19 × 15 =
  13. 13.62 × 15 =
  14. 14.52 × 15 =
  15. 15.37 × 15 =
  16. 16.47 × 15 =
  17. 17.10 × 15 =
  18. 18.63 × 15 =
  19. 19.47 × 15 =
  20. 20.26 × 15 =
  21. 21.26 × 15 =
  22. 22.22 × 15 =
  23. 23.57 × 15 =
  24. 24.4 × 15 =
  25. 25.19 × 15 =
  26. 26.44 × 15 =
  27. 27.44 × 15 =
  28. 28.15 × 15 =
  29. 29.29 × 15 =
  30. 30.24 × 15 =
  31. 31.31 × 15 =
  32. 32.12 × 15 =
  33. 33.24 × 15 =
  34. 34.16 × 15 =
  35. 35.63 × 15 =
  36. 36.28 × 15 =
  37. 37.26 × 15 =
  38. 38.32 × 15 =
  39. 39.28 × 15 =
  40. 40.58 × 15 =

Answer key

  1. 660
  2. 75
  3. 705
  4. 555
  5. 795
  6. 120
  7. 645
  8. 285
  9. 420
  10. 225
  11. 135
  12. 285
  13. 930
  14. 780
  15. 555
  16. 705
  17. 150
  18. 945
  19. 705
  20. 390
  21. 390
  22. 330
  23. 855
  24. 60
  25. 285
  26. 660
  27. 660
  28. 225
  29. 435
  30. 360
  31. 465
  32. 180
  33. 360
  34. 240
  35. 945
  36. 420
  37. 390
  38. 480
  39. 420
  40. 870

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