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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 696 · 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. 2.15 × 15 =
  3. 3.5 × 15 =
  4. 4.48 × 15 =
  5. 5.58 × 15 =
  6. 6.26 × 15 =
  7. 7.12 × 15 =
  8. 8.14 × 15 =
  9. 9.59 × 15 =
  10. 10.30 × 15 =
  11. 11.55 × 15 =
  12. 12.29 × 15 =
  13. 13.61 × 15 =
  14. 14.57 × 15 =
  15. 15.26 × 15 =
  16. 16.33 × 15 =
  17. 17.64 × 15 =
  18. 18.44 × 15 =
  19. 19.37 × 15 =
  20. 20.15 × 15 =
  21. 21.9 × 15 =
  22. 22.47 × 15 =
  23. 23.25 × 15 =
  24. 24.37 × 15 =
  25. 25.61 × 15 =
  26. 26.33 × 15 =
  27. 27.10 × 15 =
  28. 28.28 × 15 =
  29. 29.63 × 15 =
  30. 30.9 × 15 =
  31. 31.50 × 15 =
  32. 32.8 × 15 =
  33. 33.34 × 15 =
  34. 34.10 × 15 =
  35. 35.33 × 15 =
  36. 36.4 × 15 =
  37. 37.28 × 15 =
  38. 38.43 × 15 =
  39. 39.45 × 15 =
  40. 40.56 × 15 =

Answer key

  1. 90
  2. 225
  3. 75
  4. 720
  5. 870
  6. 390
  7. 180
  8. 210
  9. 885
  10. 450
  11. 825
  12. 435
  13. 915
  14. 855
  15. 390
  16. 495
  17. 960
  18. 660
  19. 555
  20. 225
  21. 135
  22. 705
  23. 375
  24. 555
  25. 915
  26. 495
  27. 150
  28. 420
  29. 945
  30. 135
  31. 750
  32. 120
  33. 510
  34. 150
  35. 495
  36. 60
  37. 420
  38. 645
  39. 675
  40. 840

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