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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 288 · 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. 2.35 × 15 =
  3. 3.19 × 15 =
  4. 4.50 × 15 =
  5. 5.29 × 15 =
  6. 6.50 × 15 =
  7. 7.11 × 15 =
  8. 8.56 × 15 =
  9. 9.18 × 15 =
  10. 10.53 × 15 =
  11. 11.46 × 15 =
  12. 12.55 × 15 =
  13. 13.56 × 15 =
  14. 14.13 × 15 =
  15. 15.52 × 15 =
  16. 16.13 × 15 =
  17. 17.45 × 15 =
  18. 18.6 × 15 =
  19. 19.14 × 15 =
  20. 20.36 × 15 =
  21. 21.21 × 15 =
  22. 22.46 × 15 =
  23. 23.23 × 15 =
  24. 24.26 × 15 =
  25. 25.5 × 15 =
  26. 26.8 × 15 =
  27. 27.19 × 15 =
  28. 28.4 × 15 =
  29. 29.27 × 15 =
  30. 30.18 × 15 =
  31. 31.20 × 15 =
  32. 32.10 × 15 =
  33. 33.20 × 15 =
  34. 34.39 × 15 =
  35. 35.37 × 15 =
  36. 36.32 × 15 =
  37. 37.4 × 15 =
  38. 38.50 × 15 =
  39. 39.14 × 15 =
  40. 40.22 × 15 =

Answer key

  1. 495
  2. 525
  3. 285
  4. 750
  5. 435
  6. 750
  7. 165
  8. 840
  9. 270
  10. 795
  11. 690
  12. 825
  13. 840
  14. 195
  15. 780
  16. 195
  17. 675
  18. 90
  19. 210
  20. 540
  21. 315
  22. 690
  23. 345
  24. 390
  25. 75
  26. 120
  27. 285
  28. 60
  29. 405
  30. 270
  31. 300
  32. 150
  33. 300
  34. 585
  35. 555
  36. 480
  37. 60
  38. 750
  39. 210
  40. 330

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