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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 469 · 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. 2.60 × 15 =
  3. 3.35 × 15 =
  4. 4.58 × 15 =
  5. 5.57 × 15 =
  6. 6.21 × 15 =
  7. 7.14 × 15 =
  8. 8.51 × 15 =
  9. 9.44 × 15 =
  10. 10.5 × 15 =
  11. 11.34 × 15 =
  12. 12.27 × 15 =
  13. 13.26 × 15 =
  14. 14.48 × 15 =
  15. 15.39 × 15 =
  16. 16.11 × 15 =
  17. 17.61 × 15 =
  18. 18.32 × 15 =
  19. 19.62 × 15 =
  20. 20.33 × 15 =
  21. 21.13 × 15 =
  22. 22.24 × 15 =
  23. 23.38 × 15 =
  24. 24.6 × 15 =
  25. 25.54 × 15 =
  26. 26.27 × 15 =
  27. 27.14 × 15 =
  28. 28.23 × 15 =
  29. 29.6 × 15 =
  30. 30.24 × 15 =
  31. 31.23 × 15 =
  32. 32.55 × 15 =
  33. 33.59 × 15 =
  34. 34.15 × 15 =
  35. 35.51 × 15 =
  36. 36.11 × 15 =
  37. 37.22 × 15 =
  38. 38.45 × 15 =
  39. 39.60 × 15 =
  40. 40.26 × 15 =

Answer key

  1. 495
  2. 900
  3. 525
  4. 870
  5. 855
  6. 315
  7. 210
  8. 765
  9. 660
  10. 75
  11. 510
  12. 405
  13. 390
  14. 720
  15. 585
  16. 165
  17. 915
  18. 480
  19. 930
  20. 495
  21. 195
  22. 360
  23. 570
  24. 90
  25. 810
  26. 405
  27. 210
  28. 345
  29. 90
  30. 360
  31. 345
  32. 825
  33. 885
  34. 225
  35. 765
  36. 165
  37. 330
  38. 675
  39. 900
  40. 390

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