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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 114 · 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. 1.36 × 15 =
  2. 2.58 × 15 =
  3. 3.10 × 15 =
  4. 4.63 × 15 =
  5. 5.38 × 15 =
  6. 6.30 × 15 =
  7. 7.32 × 15 =
  8. 8.54 × 15 =
  9. 9.61 × 15 =
  10. 10.18 × 15 =
  11. 11.55 × 15 =
  12. 12.60 × 15 =
  13. 13.51 × 15 =
  14. 14.44 × 15 =
  15. 15.30 × 15 =
  16. 16.18 × 15 =
  17. 17.50 × 15 =
  18. 18.47 × 15 =
  19. 19.17 × 15 =
  20. 20.55 × 15 =
  21. 21.44 × 15 =
  22. 22.22 × 15 =
  23. 23.56 × 15 =
  24. 24.17 × 15 =
  25. 25.22 × 15 =
  26. 26.47 × 15 =
  27. 27.62 × 15 =
  28. 28.31 × 15 =
  29. 29.64 × 15 =
  30. 30.56 × 15 =
  31. 31.8 × 15 =
  32. 32.17 × 15 =
  33. 33.38 × 15 =
  34. 34.35 × 15 =
  35. 35.35 × 15 =
  36. 36.14 × 15 =
  37. 37.33 × 15 =
  38. 38.49 × 15 =
  39. 39.14 × 15 =
  40. 40.18 × 15 =

Answer key

  1. 540
  2. 870
  3. 150
  4. 945
  5. 570
  6. 450
  7. 480
  8. 810
  9. 915
  10. 270
  11. 825
  12. 900
  13. 765
  14. 660
  15. 450
  16. 270
  17. 750
  18. 705
  19. 255
  20. 825
  21. 660
  22. 330
  23. 840
  24. 255
  25. 330
  26. 705
  27. 930
  28. 465
  29. 960
  30. 840
  31. 120
  32. 255
  33. 570
  34. 525
  35. 525
  36. 210
  37. 495
  38. 735
  39. 210
  40. 270

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