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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 533 · 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. 1.6 × 15 =
  2. 2.63 × 15 =
  3. 3.16 × 15 =
  4. 4.41 × 15 =
  5. 5.46 × 15 =
  6. 6.59 × 15 =
  7. 7.35 × 15 =
  8. 8.58 × 15 =
  9. 9.15 × 15 =
  10. 10.17 × 15 =
  11. 11.48 × 15 =
  12. 12.24 × 15 =
  13. 13.27 × 15 =
  14. 14.27 × 15 =
  15. 15.43 × 15 =
  16. 16.19 × 15 =
  17. 17.58 × 15 =
  18. 18.23 × 15 =
  19. 19.9 × 15 =
  20. 20.62 × 15 =
  21. 21.48 × 15 =
  22. 22.5 × 15 =
  23. 23.27 × 15 =
  24. 24.44 × 15 =
  25. 25.52 × 15 =
  26. 26.59 × 15 =
  27. 27.53 × 15 =
  28. 28.18 × 15 =
  29. 29.60 × 15 =
  30. 30.63 × 15 =
  31. 31.12 × 15 =
  32. 32.36 × 15 =
  33. 33.21 × 15 =
  34. 34.19 × 15 =
  35. 35.64 × 15 =
  36. 36.17 × 15 =
  37. 37.32 × 15 =
  38. 38.8 × 15 =
  39. 39.10 × 15 =
  40. 40.18 × 15 =

Answer key

  1. 90
  2. 945
  3. 240
  4. 615
  5. 690
  6. 885
  7. 525
  8. 870
  9. 225
  10. 255
  11. 720
  12. 360
  13. 405
  14. 405
  15. 645
  16. 285
  17. 870
  18. 345
  19. 135
  20. 930
  21. 720
  22. 75
  23. 405
  24. 660
  25. 780
  26. 885
  27. 795
  28. 270
  29. 900
  30. 945
  31. 180
  32. 540
  33. 315
  34. 285
  35. 960
  36. 255
  37. 480
  38. 120
  39. 150
  40. 270

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