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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 183 · 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. 3.27 × 15 =
  4. 4.22 × 15 =
  5. 5.9 × 15 =
  6. 6.60 × 15 =
  7. 7.23 × 15 =
  8. 8.54 × 15 =
  9. 9.62 × 15 =
  10. 10.36 × 15 =
  11. 11.63 × 15 =
  12. 12.50 × 15 =
  13. 13.10 × 15 =
  14. 14.12 × 15 =
  15. 15.43 × 15 =
  16. 16.46 × 15 =
  17. 17.14 × 15 =
  18. 18.16 × 15 =
  19. 19.19 × 15 =
  20. 20.10 × 15 =
  21. 21.7 × 15 =
  22. 22.17 × 15 =
  23. 23.8 × 15 =
  24. 24.49 × 15 =
  25. 25.51 × 15 =
  26. 26.18 × 15 =
  27. 27.17 × 15 =
  28. 28.61 × 15 =
  29. 29.56 × 15 =
  30. 30.36 × 15 =
  31. 31.24 × 15 =
  32. 32.52 × 15 =
  33. 33.10 × 15 =
  34. 34.7 × 15 =
  35. 35.42 × 15 =
  36. 36.25 × 15 =
  37. 37.14 × 15 =
  38. 38.17 × 15 =
  39. 39.12 × 15 =
  40. 40.39 × 15 =

Answer key

  1. 750
  2. 765
  3. 405
  4. 330
  5. 135
  6. 900
  7. 345
  8. 810
  9. 930
  10. 540
  11. 945
  12. 750
  13. 150
  14. 180
  15. 645
  16. 690
  17. 210
  18. 240
  19. 285
  20. 150
  21. 105
  22. 255
  23. 120
  24. 735
  25. 765
  26. 270
  27. 255
  28. 915
  29. 840
  30. 540
  31. 360
  32. 780
  33. 150
  34. 105
  35. 630
  36. 375
  37. 210
  38. 255
  39. 180
  40. 585

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