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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 216 · 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. 1.61 × 15 =
  2. 2.52 × 15 =
  3. 3.5 × 15 =
  4. 4.6 × 15 =
  5. 5.16 × 15 =
  6. 6.19 × 15 =
  7. 7.33 × 15 =
  8. 8.51 × 15 =
  9. 9.27 × 15 =
  10. 10.19 × 15 =
  11. 11.20 × 15 =
  12. 12.13 × 15 =
  13. 13.64 × 15 =
  14. 14.5 × 15 =
  15. 15.18 × 15 =
  16. 16.52 × 15 =
  17. 17.21 × 15 =
  18. 18.24 × 15 =
  19. 19.40 × 15 =
  20. 20.22 × 15 =
  21. 21.37 × 15 =
  22. 22.41 × 15 =
  23. 23.5 × 15 =
  24. 24.9 × 15 =
  25. 25.44 × 15 =
  26. 26.46 × 15 =
  27. 27.35 × 15 =
  28. 28.64 × 15 =
  29. 29.22 × 15 =
  30. 30.10 × 15 =
  31. 31.18 × 15 =
  32. 32.56 × 15 =
  33. 33.64 × 15 =
  34. 34.49 × 15 =
  35. 35.34 × 15 =
  36. 36.34 × 15 =
  37. 37.46 × 15 =
  38. 38.4 × 15 =
  39. 39.22 × 15 =
  40. 40.29 × 15 =

Answer key

  1. 915
  2. 780
  3. 75
  4. 90
  5. 240
  6. 285
  7. 495
  8. 765
  9. 405
  10. 285
  11. 300
  12. 195
  13. 960
  14. 75
  15. 270
  16. 780
  17. 315
  18. 360
  19. 600
  20. 330
  21. 555
  22. 615
  23. 75
  24. 135
  25. 660
  26. 690
  27. 525
  28. 960
  29. 330
  30. 150
  31. 270
  32. 840
  33. 960
  34. 735
  35. 510
  36. 510
  37. 690
  38. 60
  39. 330
  40. 435

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