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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 470 · 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. 2.25 × 15 =
  3. 3.21 × 15 =
  4. 4.36 × 15 =
  5. 5.10 × 15 =
  6. 6.26 × 15 =
  7. 7.35 × 15 =
  8. 8.11 × 15 =
  9. 9.37 × 15 =
  10. 10.58 × 15 =
  11. 11.12 × 15 =
  12. 12.13 × 15 =
  13. 13.58 × 15 =
  14. 14.28 × 15 =
  15. 15.21 × 15 =
  16. 16.30 × 15 =
  17. 17.38 × 15 =
  18. 18.34 × 15 =
  19. 19.23 × 15 =
  20. 20.35 × 15 =
  21. 21.44 × 15 =
  22. 22.11 × 15 =
  23. 23.37 × 15 =
  24. 24.8 × 15 =
  25. 25.5 × 15 =
  26. 26.8 × 15 =
  27. 27.26 × 15 =
  28. 28.31 × 15 =
  29. 29.63 × 15 =
  30. 30.62 × 15 =
  31. 31.6 × 15 =
  32. 32.59 × 15 =
  33. 33.50 × 15 =
  34. 34.7 × 15 =
  35. 35.13 × 15 =
  36. 36.7 × 15 =
  37. 37.16 × 15 =
  38. 38.15 × 15 =
  39. 39.16 × 15 =
  40. 40.31 × 15 =

Answer key

  1. 90
  2. 375
  3. 315
  4. 540
  5. 150
  6. 390
  7. 525
  8. 165
  9. 555
  10. 870
  11. 180
  12. 195
  13. 870
  14. 420
  15. 315
  16. 450
  17. 570
  18. 510
  19. 345
  20. 525
  21. 660
  22. 165
  23. 555
  24. 120
  25. 75
  26. 120
  27. 390
  28. 465
  29. 945
  30. 930
  31. 90
  32. 885
  33. 750
  34. 105
  35. 195
  36. 105
  37. 240
  38. 225
  39. 240
  40. 465

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