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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 246 · 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. 1.50 × 15 =
  2. 2.19 × 15 =
  3. 3.45 × 15 =
  4. 4.54 × 15 =
  5. 5.56 × 15 =
  6. 6.23 × 15 =
  7. 7.58 × 15 =
  8. 8.30 × 15 =
  9. 9.47 × 15 =
  10. 10.49 × 15 =
  11. 11.45 × 15 =
  12. 12.63 × 15 =
  13. 13.62 × 15 =
  14. 14.24 × 15 =
  15. 15.6 × 15 =
  16. 16.59 × 15 =
  17. 17.57 × 15 =
  18. 18.28 × 15 =
  19. 19.55 × 15 =
  20. 20.21 × 15 =
  21. 21.57 × 15 =
  22. 22.44 × 15 =
  23. 23.28 × 15 =
  24. 24.40 × 15 =
  25. 25.49 × 15 =
  26. 26.25 × 15 =
  27. 27.63 × 15 =
  28. 28.8 × 15 =
  29. 29.13 × 15 =
  30. 30.46 × 15 =
  31. 31.58 × 15 =
  32. 32.36 × 15 =
  33. 33.15 × 15 =
  34. 34.18 × 15 =
  35. 35.48 × 15 =
  36. 36.15 × 15 =
  37. 37.35 × 15 =
  38. 38.13 × 15 =
  39. 39.52 × 15 =
  40. 40.4 × 15 =

Answer key

  1. 750
  2. 285
  3. 675
  4. 810
  5. 840
  6. 345
  7. 870
  8. 450
  9. 705
  10. 735
  11. 675
  12. 945
  13. 930
  14. 360
  15. 90
  16. 885
  17. 855
  18. 420
  19. 825
  20. 315
  21. 855
  22. 660
  23. 420
  24. 600
  25. 735
  26. 375
  27. 945
  28. 120
  29. 195
  30. 690
  31. 870
  32. 540
  33. 225
  34. 270
  35. 720
  36. 225
  37. 525
  38. 195
  39. 780
  40. 60

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