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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 112 · 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. 1.53 × 15 =
  2. 2.22 × 15 =
  3. 3.27 × 15 =
  4. 4.23 × 15 =
  5. 5.14 × 15 =
  6. 6.25 × 15 =
  7. 7.21 × 15 =
  8. 8.46 × 15 =
  9. 9.29 × 15 =
  10. 10.18 × 15 =
  11. 11.50 × 15 =
  12. 12.37 × 15 =
  13. 13.48 × 15 =
  14. 14.52 × 15 =
  15. 15.16 × 15 =
  16. 16.52 × 15 =
  17. 17.25 × 15 =
  18. 18.48 × 15 =
  19. 19.29 × 15 =
  20. 20.6 × 15 =
  21. 21.20 × 15 =
  22. 22.9 × 15 =
  23. 23.57 × 15 =
  24. 24.50 × 15 =
  25. 25.35 × 15 =
  26. 26.25 × 15 =
  27. 27.19 × 15 =
  28. 28.29 × 15 =
  29. 29.29 × 15 =
  30. 30.14 × 15 =
  31. 31.55 × 15 =
  32. 32.17 × 15 =
  33. 33.14 × 15 =
  34. 34.36 × 15 =
  35. 35.26 × 15 =
  36. 36.48 × 15 =
  37. 37.23 × 15 =
  38. 38.13 × 15 =
  39. 39.24 × 15 =
  40. 40.37 × 15 =

Answer key

  1. 795
  2. 330
  3. 405
  4. 345
  5. 210
  6. 375
  7. 315
  8. 690
  9. 435
  10. 270
  11. 750
  12. 555
  13. 720
  14. 780
  15. 240
  16. 780
  17. 375
  18. 720
  19. 435
  20. 90
  21. 300
  22. 135
  23. 855
  24. 750
  25. 525
  26. 375
  27. 285
  28. 435
  29. 435
  30. 210
  31. 825
  32. 255
  33. 210
  34. 540
  35. 390
  36. 720
  37. 345
  38. 195
  39. 360
  40. 555

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