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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 22 · 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. 1.24 × 15 =
  2. 2.59 × 15 =
  3. 3.44 × 15 =
  4. 4.45 × 15 =
  5. 5.27 × 15 =
  6. 6.55 × 15 =
  7. 7.21 × 15 =
  8. 8.14 × 15 =
  9. 9.55 × 15 =
  10. 10.26 × 15 =
  11. 11.61 × 15 =
  12. 12.46 × 15 =
  13. 13.24 × 15 =
  14. 14.39 × 15 =
  15. 15.29 × 15 =
  16. 16.22 × 15 =
  17. 17.63 × 15 =
  18. 18.30 × 15 =
  19. 19.19 × 15 =
  20. 20.28 × 15 =
  21. 21.54 × 15 =
  22. 22.18 × 15 =
  23. 23.7 × 15 =
  24. 24.9 × 15 =
  25. 25.40 × 15 =
  26. 26.11 × 15 =
  27. 27.14 × 15 =
  28. 28.39 × 15 =
  29. 29.7 × 15 =
  30. 30.35 × 15 =
  31. 31.23 × 15 =
  32. 32.5 × 15 =
  33. 33.15 × 15 =
  34. 34.9 × 15 =
  35. 35.39 × 15 =
  36. 36.52 × 15 =
  37. 37.60 × 15 =
  38. 38.21 × 15 =
  39. 39.19 × 15 =
  40. 40.62 × 15 =

Answer key

  1. 360
  2. 885
  3. 660
  4. 675
  5. 405
  6. 825
  7. 315
  8. 210
  9. 825
  10. 390
  11. 915
  12. 690
  13. 360
  14. 585
  15. 435
  16. 330
  17. 945
  18. 450
  19. 285
  20. 420
  21. 810
  22. 270
  23. 105
  24. 135
  25. 600
  26. 165
  27. 210
  28. 585
  29. 105
  30. 525
  31. 345
  32. 75
  33. 225
  34. 135
  35. 585
  36. 780
  37. 900
  38. 315
  39. 285
  40. 930

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