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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 619 · 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. 1.26 × 15 =
  2. 2.27 × 15 =
  3. 3.40 × 15 =
  4. 4.13 × 15 =
  5. 5.18 × 15 =
  6. 6.27 × 15 =
  7. 7.58 × 15 =
  8. 8.37 × 15 =
  9. 9.21 × 15 =
  10. 10.56 × 15 =
  11. 11.23 × 15 =
  12. 12.39 × 15 =
  13. 13.28 × 15 =
  14. 14.19 × 15 =
  15. 15.38 × 15 =
  16. 16.63 × 15 =
  17. 17.38 × 15 =
  18. 18.46 × 15 =
  19. 19.21 × 15 =
  20. 20.48 × 15 =
  21. 21.15 × 15 =
  22. 22.62 × 15 =
  23. 23.47 × 15 =
  24. 24.16 × 15 =
  25. 25.12 × 15 =
  26. 26.59 × 15 =
  27. 27.14 × 15 =
  28. 28.28 × 15 =
  29. 29.31 × 15 =
  30. 30.7 × 15 =
  31. 31.48 × 15 =
  32. 32.64 × 15 =
  33. 33.34 × 15 =
  34. 34.46 × 15 =
  35. 35.23 × 15 =
  36. 36.13 × 15 =
  37. 37.15 × 15 =
  38. 38.10 × 15 =
  39. 39.45 × 15 =
  40. 40.16 × 15 =

Answer key

  1. 390
  2. 405
  3. 600
  4. 195
  5. 270
  6. 405
  7. 870
  8. 555
  9. 315
  10. 840
  11. 345
  12. 585
  13. 420
  14. 285
  15. 570
  16. 945
  17. 570
  18. 690
  19. 315
  20. 720
  21. 225
  22. 930
  23. 705
  24. 240
  25. 180
  26. 885
  27. 210
  28. 420
  29. 465
  30. 105
  31. 720
  32. 960
  33. 510
  34. 690
  35. 345
  36. 195
  37. 225
  38. 150
  39. 675
  40. 240

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