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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 802 · 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. 1.18 × 15 =
  2. 2.47 × 15 =
  3. 3.45 × 15 =
  4. 4.41 × 15 =
  5. 5.46 × 15 =
  6. 6.38 × 15 =
  7. 7.13 × 15 =
  8. 8.55 × 15 =
  9. 9.7 × 15 =
  10. 10.5 × 15 =
  11. 11.23 × 15 =
  12. 12.6 × 15 =
  13. 13.38 × 15 =
  14. 14.37 × 15 =
  15. 15.10 × 15 =
  16. 16.59 × 15 =
  17. 17.47 × 15 =
  18. 18.39 × 15 =
  19. 19.6 × 15 =
  20. 20.17 × 15 =
  21. 21.8 × 15 =
  22. 22.5 × 15 =
  23. 23.47 × 15 =
  24. 24.30 × 15 =
  25. 25.26 × 15 =
  26. 26.23 × 15 =
  27. 27.5 × 15 =
  28. 28.52 × 15 =
  29. 29.51 × 15 =
  30. 30.15 × 15 =
  31. 31.37 × 15 =
  32. 32.12 × 15 =
  33. 33.57 × 15 =
  34. 34.51 × 15 =
  35. 35.63 × 15 =
  36. 36.60 × 15 =
  37. 37.64 × 15 =
  38. 38.18 × 15 =
  39. 39.48 × 15 =
  40. 40.59 × 15 =

Answer key

  1. 270
  2. 705
  3. 675
  4. 615
  5. 690
  6. 570
  7. 195
  8. 825
  9. 105
  10. 75
  11. 345
  12. 90
  13. 570
  14. 555
  15. 150
  16. 885
  17. 705
  18. 585
  19. 90
  20. 255
  21. 120
  22. 75
  23. 705
  24. 450
  25. 390
  26. 345
  27. 75
  28. 780
  29. 765
  30. 225
  31. 555
  32. 180
  33. 855
  34. 765
  35. 945
  36. 900
  37. 960
  38. 270
  39. 720
  40. 885

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