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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 984 · 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. 1.11 × 15 =
  2. 2.62 × 15 =
  3. 3.56 × 15 =
  4. 4.15 × 15 =
  5. 5.56 × 15 =
  6. 6.57 × 15 =
  7. 7.40 × 15 =
  8. 8.64 × 15 =
  9. 9.58 × 15 =
  10. 10.28 × 15 =
  11. 11.4 × 15 =
  12. 12.7 × 15 =
  13. 13.58 × 15 =
  14. 14.56 × 15 =
  15. 15.14 × 15 =
  16. 16.63 × 15 =
  17. 17.40 × 15 =
  18. 18.64 × 15 =
  19. 19.54 × 15 =
  20. 20.25 × 15 =
  21. 21.38 × 15 =
  22. 22.57 × 15 =
  23. 23.10 × 15 =
  24. 24.21 × 15 =
  25. 25.51 × 15 =
  26. 26.36 × 15 =
  27. 27.4 × 15 =
  28. 28.12 × 15 =
  29. 29.59 × 15 =
  30. 30.18 × 15 =
  31. 31.19 × 15 =
  32. 32.4 × 15 =
  33. 33.8 × 15 =
  34. 34.42 × 15 =
  35. 35.31 × 15 =
  36. 36.13 × 15 =
  37. 37.57 × 15 =
  38. 38.24 × 15 =
  39. 39.27 × 15 =
  40. 40.21 × 15 =

Answer key

  1. 165
  2. 930
  3. 840
  4. 225
  5. 840
  6. 855
  7. 600
  8. 960
  9. 870
  10. 420
  11. 60
  12. 105
  13. 870
  14. 840
  15. 210
  16. 945
  17. 600
  18. 960
  19. 810
  20. 375
  21. 570
  22. 855
  23. 150
  24. 315
  25. 765
  26. 540
  27. 60
  28. 180
  29. 885
  30. 270
  31. 285
  32. 60
  33. 120
  34. 630
  35. 465
  36. 195
  37. 855
  38. 360
  39. 405
  40. 315

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