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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 873 · 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. 2.14 × 15 =
  3. 3.49 × 15 =
  4. 4.26 × 15 =
  5. 5.38 × 15 =
  6. 6.27 × 15 =
  7. 7.22 × 15 =
  8. 8.50 × 15 =
  9. 9.13 × 15 =
  10. 10.48 × 15 =
  11. 11.60 × 15 =
  12. 12.37 × 15 =
  13. 13.26 × 15 =
  14. 14.35 × 15 =
  15. 15.23 × 15 =
  16. 16.26 × 15 =
  17. 17.32 × 15 =
  18. 18.24 × 15 =
  19. 19.29 × 15 =
  20. 20.23 × 15 =
  21. 21.39 × 15 =
  22. 22.6 × 15 =
  23. 23.30 × 15 =
  24. 24.20 × 15 =
  25. 25.25 × 15 =
  26. 26.59 × 15 =
  27. 27.63 × 15 =
  28. 28.47 × 15 =
  29. 29.20 × 15 =
  30. 30.14 × 15 =
  31. 31.21 × 15 =
  32. 32.54 × 15 =
  33. 33.24 × 15 =
  34. 34.11 × 15 =
  35. 35.54 × 15 =
  36. 36.34 × 15 =
  37. 37.21 × 15 =
  38. 38.21 × 15 =
  39. 39.63 × 15 =
  40. 40.29 × 15 =

Answer key

  1. 360
  2. 210
  3. 735
  4. 390
  5. 570
  6. 405
  7. 330
  8. 750
  9. 195
  10. 720
  11. 900
  12. 555
  13. 390
  14. 525
  15. 345
  16. 390
  17. 480
  18. 360
  19. 435
  20. 345
  21. 585
  22. 90
  23. 450
  24. 300
  25. 375
  26. 885
  27. 945
  28. 705
  29. 300
  30. 210
  31. 315
  32. 810
  33. 360
  34. 165
  35. 810
  36. 510
  37. 315
  38. 315
  39. 945
  40. 435

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