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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 866 · 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. 1.11 × 15 =
  2. 2.48 × 15 =
  3. 3.49 × 15 =
  4. 4.21 × 15 =
  5. 5.41 × 15 =
  6. 6.26 × 15 =
  7. 7.52 × 15 =
  8. 8.49 × 15 =
  9. 9.35 × 15 =
  10. 10.7 × 15 =
  11. 11.24 × 15 =
  12. 12.57 × 15 =
  13. 13.53 × 15 =
  14. 14.13 × 15 =
  15. 15.51 × 15 =
  16. 16.27 × 15 =
  17. 17.9 × 15 =
  18. 18.19 × 15 =
  19. 19.35 × 15 =
  20. 20.49 × 15 =
  21. 21.47 × 15 =
  22. 22.29 × 15 =
  23. 23.52 × 15 =
  24. 24.17 × 15 =
  25. 25.59 × 15 =
  26. 26.38 × 15 =
  27. 27.58 × 15 =
  28. 28.51 × 15 =
  29. 29.56 × 15 =
  30. 30.62 × 15 =
  31. 31.48 × 15 =
  32. 32.9 × 15 =
  33. 33.62 × 15 =
  34. 34.15 × 15 =
  35. 35.32 × 15 =
  36. 36.17 × 15 =
  37. 37.12 × 15 =
  38. 38.19 × 15 =
  39. 39.7 × 15 =
  40. 40.51 × 15 =

Answer key

  1. 165
  2. 720
  3. 735
  4. 315
  5. 615
  6. 390
  7. 780
  8. 735
  9. 525
  10. 105
  11. 360
  12. 855
  13. 795
  14. 195
  15. 765
  16. 405
  17. 135
  18. 285
  19. 525
  20. 735
  21. 705
  22. 435
  23. 780
  24. 255
  25. 885
  26. 570
  27. 870
  28. 765
  29. 840
  30. 930
  31. 720
  32. 135
  33. 930
  34. 225
  35. 480
  36. 255
  37. 180
  38. 285
  39. 105
  40. 765

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