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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 662 · 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. 1.18 × 15 =
  2. 2.15 × 15 =
  3. 3.13 × 15 =
  4. 4.59 × 15 =
  5. 5.55 × 15 =
  6. 6.37 × 15 =
  7. 7.14 × 15 =
  8. 8.35 × 15 =
  9. 9.55 × 15 =
  10. 10.57 × 15 =
  11. 11.18 × 15 =
  12. 12.7 × 15 =
  13. 13.33 × 15 =
  14. 14.35 × 15 =
  15. 15.36 × 15 =
  16. 16.20 × 15 =
  17. 17.10 × 15 =
  18. 18.22 × 15 =
  19. 19.33 × 15 =
  20. 20.47 × 15 =
  21. 21.46 × 15 =
  22. 22.42 × 15 =
  23. 23.22 × 15 =
  24. 24.11 × 15 =
  25. 25.23 × 15 =
  26. 26.28 × 15 =
  27. 27.27 × 15 =
  28. 28.9 × 15 =
  29. 29.54 × 15 =
  30. 30.60 × 15 =
  31. 31.39 × 15 =
  32. 32.27 × 15 =
  33. 33.28 × 15 =
  34. 34.57 × 15 =
  35. 35.5 × 15 =
  36. 36.62 × 15 =
  37. 37.62 × 15 =
  38. 38.38 × 15 =
  39. 39.34 × 15 =
  40. 40.44 × 15 =

Answer key

  1. 270
  2. 225
  3. 195
  4. 885
  5. 825
  6. 555
  7. 210
  8. 525
  9. 825
  10. 855
  11. 270
  12. 105
  13. 495
  14. 525
  15. 540
  16. 300
  17. 150
  18. 330
  19. 495
  20. 705
  21. 690
  22. 630
  23. 330
  24. 165
  25. 345
  26. 420
  27. 405
  28. 135
  29. 810
  30. 900
  31. 585
  32. 405
  33. 420
  34. 855
  35. 75
  36. 930
  37. 930
  38. 570
  39. 510
  40. 660

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