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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 330 · 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. 2.16 × 15 =
  3. 3.35 × 15 =
  4. 4.58 × 15 =
  5. 5.9 × 15 =
  6. 6.26 × 15 =
  7. 7.27 × 15 =
  8. 8.61 × 15 =
  9. 9.33 × 15 =
  10. 10.47 × 15 =
  11. 11.20 × 15 =
  12. 12.59 × 15 =
  13. 13.11 × 15 =
  14. 14.14 × 15 =
  15. 15.42 × 15 =
  16. 16.32 × 15 =
  17. 17.12 × 15 =
  18. 18.64 × 15 =
  19. 19.4 × 15 =
  20. 20.10 × 15 =
  21. 21.35 × 15 =
  22. 22.11 × 15 =
  23. 23.18 × 15 =
  24. 24.4 × 15 =
  25. 25.4 × 15 =
  26. 26.9 × 15 =
  27. 27.56 × 15 =
  28. 28.40 × 15 =
  29. 29.29 × 15 =
  30. 30.18 × 15 =
  31. 31.57 × 15 =
  32. 32.37 × 15 =
  33. 33.12 × 15 =
  34. 34.50 × 15 =
  35. 35.34 × 15 =
  36. 36.18 × 15 =
  37. 37.13 × 15 =
  38. 38.64 × 15 =
  39. 39.40 × 15 =
  40. 40.18 × 15 =

Answer key

  1. 360
  2. 240
  3. 525
  4. 870
  5. 135
  6. 390
  7. 405
  8. 915
  9. 495
  10. 705
  11. 300
  12. 885
  13. 165
  14. 210
  15. 630
  16. 480
  17. 180
  18. 960
  19. 60
  20. 150
  21. 525
  22. 165
  23. 270
  24. 60
  25. 60
  26. 135
  27. 840
  28. 600
  29. 435
  30. 270
  31. 855
  32. 555
  33. 180
  34. 750
  35. 510
  36. 270
  37. 195
  38. 960
  39. 600
  40. 270

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