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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 702 · 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. 1.5 × 15 =
  2. 2.34 × 15 =
  3. 3.24 × 15 =
  4. 4.59 × 15 =
  5. 5.62 × 15 =
  6. 6.32 × 15 =
  7. 7.25 × 15 =
  8. 8.44 × 15 =
  9. 9.6 × 15 =
  10. 10.63 × 15 =
  11. 11.61 × 15 =
  12. 12.26 × 15 =
  13. 13.26 × 15 =
  14. 14.60 × 15 =
  15. 15.28 × 15 =
  16. 16.14 × 15 =
  17. 17.62 × 15 =
  18. 18.9 × 15 =
  19. 19.60 × 15 =
  20. 20.53 × 15 =
  21. 21.61 × 15 =
  22. 22.61 × 15 =
  23. 23.15 × 15 =
  24. 24.44 × 15 =
  25. 25.64 × 15 =
  26. 26.37 × 15 =
  27. 27.55 × 15 =
  28. 28.43 × 15 =
  29. 29.58 × 15 =
  30. 30.43 × 15 =
  31. 31.40 × 15 =
  32. 32.46 × 15 =
  33. 33.24 × 15 =
  34. 34.47 × 15 =
  35. 35.15 × 15 =
  36. 36.14 × 15 =
  37. 37.50 × 15 =
  38. 38.32 × 15 =
  39. 39.8 × 15 =
  40. 40.18 × 15 =

Answer key

  1. 75
  2. 510
  3. 360
  4. 885
  5. 930
  6. 480
  7. 375
  8. 660
  9. 90
  10. 945
  11. 915
  12. 390
  13. 390
  14. 900
  15. 420
  16. 210
  17. 930
  18. 135
  19. 900
  20. 795
  21. 915
  22. 915
  23. 225
  24. 660
  25. 960
  26. 555
  27. 825
  28. 645
  29. 870
  30. 645
  31. 600
  32. 690
  33. 360
  34. 705
  35. 225
  36. 210
  37. 750
  38. 480
  39. 120
  40. 270

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