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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 596 · 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. 1.14 × 15 =
  2. 2.12 × 15 =
  3. 3.36 × 15 =
  4. 4.38 × 15 =
  5. 5.24 × 15 =
  6. 6.37 × 15 =
  7. 7.53 × 15 =
  8. 8.19 × 15 =
  9. 9.46 × 15 =
  10. 10.64 × 15 =
  11. 11.25 × 15 =
  12. 12.9 × 15 =
  13. 13.40 × 15 =
  14. 14.26 × 15 =
  15. 15.52 × 15 =
  16. 16.13 × 15 =
  17. 17.23 × 15 =
  18. 18.41 × 15 =
  19. 19.42 × 15 =
  20. 20.20 × 15 =
  21. 21.5 × 15 =
  22. 22.20 × 15 =
  23. 23.46 × 15 =
  24. 24.59 × 15 =
  25. 25.21 × 15 =
  26. 26.60 × 15 =
  27. 27.51 × 15 =
  28. 28.37 × 15 =
  29. 29.13 × 15 =
  30. 30.63 × 15 =
  31. 31.10 × 15 =
  32. 32.22 × 15 =
  33. 33.14 × 15 =
  34. 34.14 × 15 =
  35. 35.10 × 15 =
  36. 36.62 × 15 =
  37. 37.15 × 15 =
  38. 38.31 × 15 =
  39. 39.63 × 15 =
  40. 40.23 × 15 =

Answer key

  1. 210
  2. 180
  3. 540
  4. 570
  5. 360
  6. 555
  7. 795
  8. 285
  9. 690
  10. 960
  11. 375
  12. 135
  13. 600
  14. 390
  15. 780
  16. 195
  17. 345
  18. 615
  19. 630
  20. 300
  21. 75
  22. 300
  23. 690
  24. 885
  25. 315
  26. 900
  27. 765
  28. 555
  29. 195
  30. 945
  31. 150
  32. 330
  33. 210
  34. 210
  35. 150
  36. 930
  37. 225
  38. 465
  39. 945
  40. 345

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