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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 43 · 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. 1.9 × 15 =
  2. 2.22 × 15 =
  3. 3.35 × 15 =
  4. 4.15 × 15 =
  5. 5.27 × 15 =
  6. 6.6 × 15 =
  7. 7.21 × 15 =
  8. 8.8 × 15 =
  9. 9.10 × 15 =
  10. 10.59 × 15 =
  11. 11.6 × 15 =
  12. 12.64 × 15 =
  13. 13.11 × 15 =
  14. 14.51 × 15 =
  15. 15.7 × 15 =
  16. 16.16 × 15 =
  17. 17.36 × 15 =
  18. 18.46 × 15 =
  19. 19.53 × 15 =
  20. 20.37 × 15 =
  21. 21.30 × 15 =
  22. 22.32 × 15 =
  23. 23.20 × 15 =
  24. 24.22 × 15 =
  25. 25.28 × 15 =
  26. 26.55 × 15 =
  27. 27.20 × 15 =
  28. 28.36 × 15 =
  29. 29.43 × 15 =
  30. 30.30 × 15 =
  31. 31.36 × 15 =
  32. 32.25 × 15 =
  33. 33.21 × 15 =
  34. 34.4 × 15 =
  35. 35.11 × 15 =
  36. 36.45 × 15 =
  37. 37.16 × 15 =
  38. 38.61 × 15 =
  39. 39.19 × 15 =
  40. 40.36 × 15 =

Answer key

  1. 135
  2. 330
  3. 525
  4. 225
  5. 405
  6. 90
  7. 315
  8. 120
  9. 150
  10. 885
  11. 90
  12. 960
  13. 165
  14. 765
  15. 105
  16. 240
  17. 540
  18. 690
  19. 795
  20. 555
  21. 450
  22. 480
  23. 300
  24. 330
  25. 420
  26. 825
  27. 300
  28. 540
  29. 645
  30. 450
  31. 540
  32. 375
  33. 315
  34. 60
  35. 165
  36. 675
  37. 240
  38. 915
  39. 285
  40. 540

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