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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 219 · 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. 1.19 × 15 =
  2. 2.28 × 15 =
  3. 3.6 × 15 =
  4. 4.62 × 15 =
  5. 5.23 × 15 =
  6. 6.32 × 15 =
  7. 7.45 × 15 =
  8. 8.12 × 15 =
  9. 9.12 × 15 =
  10. 10.11 × 15 =
  11. 11.56 × 15 =
  12. 12.6 × 15 =
  13. 13.33 × 15 =
  14. 14.20 × 15 =
  15. 15.18 × 15 =
  16. 16.40 × 15 =
  17. 17.60 × 15 =
  18. 18.49 × 15 =
  19. 19.8 × 15 =
  20. 20.19 × 15 =
  21. 21.52 × 15 =
  22. 22.22 × 15 =
  23. 23.21 × 15 =
  24. 24.28 × 15 =
  25. 25.36 × 15 =
  26. 26.15 × 15 =
  27. 27.4 × 15 =
  28. 28.16 × 15 =
  29. 29.8 × 15 =
  30. 30.21 × 15 =
  31. 31.8 × 15 =
  32. 32.62 × 15 =
  33. 33.56 × 15 =
  34. 34.49 × 15 =
  35. 35.35 × 15 =
  36. 36.7 × 15 =
  37. 37.15 × 15 =
  38. 38.40 × 15 =
  39. 39.53 × 15 =
  40. 40.10 × 15 =

Answer key

  1. 285
  2. 420
  3. 90
  4. 930
  5. 345
  6. 480
  7. 675
  8. 180
  9. 180
  10. 165
  11. 840
  12. 90
  13. 495
  14. 300
  15. 270
  16. 600
  17. 900
  18. 735
  19. 120
  20. 285
  21. 780
  22. 330
  23. 315
  24. 420
  25. 540
  26. 225
  27. 60
  28. 240
  29. 120
  30. 315
  31. 120
  32. 930
  33. 840
  34. 735
  35. 525
  36. 105
  37. 225
  38. 600
  39. 795
  40. 150

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