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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 632 · 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. 1.62 × 15 =
  2. 2.7 × 15 =
  3. 3.9 × 15 =
  4. 4.18 × 15 =
  5. 5.61 × 15 =
  6. 6.58 × 15 =
  7. 7.36 × 15 =
  8. 8.26 × 15 =
  9. 9.59 × 15 =
  10. 10.55 × 15 =
  11. 11.52 × 15 =
  12. 12.35 × 15 =
  13. 13.15 × 15 =
  14. 14.31 × 15 =
  15. 15.6 × 15 =
  16. 16.20 × 15 =
  17. 17.33 × 15 =
  18. 18.16 × 15 =
  19. 19.48 × 15 =
  20. 20.58 × 15 =
  21. 21.39 × 15 =
  22. 22.64 × 15 =
  23. 23.34 × 15 =
  24. 24.46 × 15 =
  25. 25.44 × 15 =
  26. 26.51 × 15 =
  27. 27.7 × 15 =
  28. 28.52 × 15 =
  29. 29.64 × 15 =
  30. 30.28 × 15 =
  31. 31.6 × 15 =
  32. 32.64 × 15 =
  33. 33.22 × 15 =
  34. 34.14 × 15 =
  35. 35.52 × 15 =
  36. 36.11 × 15 =
  37. 37.41 × 15 =
  38. 38.37 × 15 =
  39. 39.16 × 15 =
  40. 40.33 × 15 =

Answer key

  1. 930
  2. 105
  3. 135
  4. 270
  5. 915
  6. 870
  7. 540
  8. 390
  9. 885
  10. 825
  11. 780
  12. 525
  13. 225
  14. 465
  15. 90
  16. 300
  17. 495
  18. 240
  19. 720
  20. 870
  21. 585
  22. 960
  23. 510
  24. 690
  25. 660
  26. 765
  27. 105
  28. 780
  29. 960
  30. 420
  31. 90
  32. 960
  33. 330
  34. 210
  35. 780
  36. 165
  37. 615
  38. 555
  39. 240
  40. 495

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