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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 341 · 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. 1.50 × 15 =
  2. 2.51 × 15 =
  3. 3.51 × 15 =
  4. 4.31 × 15 =
  5. 5.17 × 15 =
  6. 6.52 × 15 =
  7. 7.50 × 15 =
  8. 8.44 × 15 =
  9. 9.4 × 15 =
  10. 10.36 × 15 =
  11. 11.32 × 15 =
  12. 12.43 × 15 =
  13. 13.37 × 15 =
  14. 14.62 × 15 =
  15. 15.62 × 15 =
  16. 16.63 × 15 =
  17. 17.36 × 15 =
  18. 18.40 × 15 =
  19. 19.5 × 15 =
  20. 20.16 × 15 =
  21. 21.21 × 15 =
  22. 22.54 × 15 =
  23. 23.29 × 15 =
  24. 24.45 × 15 =
  25. 25.63 × 15 =
  26. 26.61 × 15 =
  27. 27.48 × 15 =
  28. 28.6 × 15 =
  29. 29.62 × 15 =
  30. 30.31 × 15 =
  31. 31.33 × 15 =
  32. 32.28 × 15 =
  33. 33.63 × 15 =
  34. 34.12 × 15 =
  35. 35.37 × 15 =
  36. 36.44 × 15 =
  37. 37.20 × 15 =
  38. 38.62 × 15 =
  39. 39.40 × 15 =
  40. 40.27 × 15 =

Answer key

  1. 750
  2. 765
  3. 765
  4. 465
  5. 255
  6. 780
  7. 750
  8. 660
  9. 60
  10. 540
  11. 480
  12. 645
  13. 555
  14. 930
  15. 930
  16. 945
  17. 540
  18. 600
  19. 75
  20. 240
  21. 315
  22. 810
  23. 435
  24. 675
  25. 945
  26. 915
  27. 720
  28. 90
  29. 930
  30. 465
  31. 495
  32. 420
  33. 945
  34. 180
  35. 555
  36. 660
  37. 300
  38. 930
  39. 600
  40. 405

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