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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 874 · 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. 1.7 × 15 =
  2. 2.22 × 15 =
  3. 3.30 × 15 =
  4. 4.57 × 15 =
  5. 5.64 × 15 =
  6. 6.19 × 15 =
  7. 7.16 × 15 =
  8. 8.64 × 15 =
  9. 9.45 × 15 =
  10. 10.40 × 15 =
  11. 11.42 × 15 =
  12. 12.22 × 15 =
  13. 13.7 × 15 =
  14. 14.59 × 15 =
  15. 15.63 × 15 =
  16. 16.45 × 15 =
  17. 17.13 × 15 =
  18. 18.59 × 15 =
  19. 19.23 × 15 =
  20. 20.57 × 15 =
  21. 21.18 × 15 =
  22. 22.23 × 15 =
  23. 23.27 × 15 =
  24. 24.8 × 15 =
  25. 25.4 × 15 =
  26. 26.57 × 15 =
  27. 27.61 × 15 =
  28. 28.35 × 15 =
  29. 29.10 × 15 =
  30. 30.19 × 15 =
  31. 31.40 × 15 =
  32. 32.5 × 15 =
  33. 33.14 × 15 =
  34. 34.14 × 15 =
  35. 35.20 × 15 =
  36. 36.40 × 15 =
  37. 37.51 × 15 =
  38. 38.42 × 15 =
  39. 39.49 × 15 =
  40. 40.36 × 15 =

Answer key

  1. 105
  2. 330
  3. 450
  4. 855
  5. 960
  6. 285
  7. 240
  8. 960
  9. 675
  10. 600
  11. 630
  12. 330
  13. 105
  14. 885
  15. 945
  16. 675
  17. 195
  18. 885
  19. 345
  20. 855
  21. 270
  22. 345
  23. 405
  24. 120
  25. 60
  26. 855
  27. 915
  28. 525
  29. 150
  30. 285
  31. 600
  32. 75
  33. 210
  34. 210
  35. 300
  36. 600
  37. 765
  38. 630
  39. 735
  40. 540

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