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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 503 · 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. 1.27 × 15 =
  2. 2.59 × 15 =
  3. 3.4 × 15 =
  4. 4.56 × 15 =
  5. 5.53 × 15 =
  6. 6.18 × 15 =
  7. 7.20 × 15 =
  8. 8.47 × 15 =
  9. 9.34 × 15 =
  10. 10.28 × 15 =
  11. 11.31 × 15 =
  12. 12.16 × 15 =
  13. 13.47 × 15 =
  14. 14.37 × 15 =
  15. 15.54 × 15 =
  16. 16.19 × 15 =
  17. 17.42 × 15 =
  18. 18.64 × 15 =
  19. 19.13 × 15 =
  20. 20.11 × 15 =
  21. 21.60 × 15 =
  22. 22.14 × 15 =
  23. 23.35 × 15 =
  24. 24.31 × 15 =
  25. 25.60 × 15 =
  26. 26.16 × 15 =
  27. 27.36 × 15 =
  28. 28.20 × 15 =
  29. 29.16 × 15 =
  30. 30.8 × 15 =
  31. 31.37 × 15 =
  32. 32.18 × 15 =
  33. 33.29 × 15 =
  34. 34.36 × 15 =
  35. 35.59 × 15 =
  36. 36.38 × 15 =
  37. 37.4 × 15 =
  38. 38.55 × 15 =
  39. 39.57 × 15 =
  40. 40.59 × 15 =

Answer key

  1. 405
  2. 885
  3. 60
  4. 840
  5. 795
  6. 270
  7. 300
  8. 705
  9. 510
  10. 420
  11. 465
  12. 240
  13. 705
  14. 555
  15. 810
  16. 285
  17. 630
  18. 960
  19. 195
  20. 165
  21. 900
  22. 210
  23. 525
  24. 465
  25. 900
  26. 240
  27. 540
  28. 300
  29. 240
  30. 120
  31. 555
  32. 270
  33. 435
  34. 540
  35. 885
  36. 570
  37. 60
  38. 825
  39. 855
  40. 885

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