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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 395 · 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. 1.64 × 15 =
  2. 2.43 × 15 =
  3. 3.25 × 15 =
  4. 4.23 × 15 =
  5. 5.19 × 15 =
  6. 6.26 × 15 =
  7. 7.60 × 15 =
  8. 8.58 × 15 =
  9. 9.35 × 15 =
  10. 10.24 × 15 =
  11. 11.47 × 15 =
  12. 12.57 × 15 =
  13. 13.22 × 15 =
  14. 14.62 × 15 =
  15. 15.33 × 15 =
  16. 16.33 × 15 =
  17. 17.41 × 15 =
  18. 18.4 × 15 =
  19. 19.23 × 15 =
  20. 20.7 × 15 =
  21. 21.55 × 15 =
  22. 22.32 × 15 =
  23. 23.54 × 15 =
  24. 24.11 × 15 =
  25. 25.33 × 15 =
  26. 26.48 × 15 =
  27. 27.57 × 15 =
  28. 28.4 × 15 =
  29. 29.42 × 15 =
  30. 30.10 × 15 =
  31. 31.51 × 15 =
  32. 32.49 × 15 =
  33. 33.58 × 15 =
  34. 34.55 × 15 =
  35. 35.31 × 15 =
  36. 36.36 × 15 =
  37. 37.29 × 15 =
  38. 38.4 × 15 =
  39. 39.37 × 15 =
  40. 40.37 × 15 =

Answer key

  1. 960
  2. 645
  3. 375
  4. 345
  5. 285
  6. 390
  7. 900
  8. 870
  9. 525
  10. 360
  11. 705
  12. 855
  13. 330
  14. 930
  15. 495
  16. 495
  17. 615
  18. 60
  19. 345
  20. 105
  21. 825
  22. 480
  23. 810
  24. 165
  25. 495
  26. 720
  27. 855
  28. 60
  29. 630
  30. 150
  31. 765
  32. 735
  33. 870
  34. 825
  35. 465
  36. 540
  37. 435
  38. 60
  39. 555
  40. 555

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