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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 835 · 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. 1.60 × 15 =
  2. 2.13 × 15 =
  3. 3.20 × 15 =
  4. 4.11 × 15 =
  5. 5.34 × 15 =
  6. 6.19 × 15 =
  7. 7.4 × 15 =
  8. 8.39 × 15 =
  9. 9.9 × 15 =
  10. 10.17 × 15 =
  11. 11.64 × 15 =
  12. 12.42 × 15 =
  13. 13.4 × 15 =
  14. 14.13 × 15 =
  15. 15.43 × 15 =
  16. 16.5 × 15 =
  17. 17.6 × 15 =
  18. 18.7 × 15 =
  19. 19.15 × 15 =
  20. 20.6 × 15 =
  21. 21.48 × 15 =
  22. 22.17 × 15 =
  23. 23.24 × 15 =
  24. 24.18 × 15 =
  25. 25.61 × 15 =
  26. 26.49 × 15 =
  27. 27.7 × 15 =
  28. 28.39 × 15 =
  29. 29.28 × 15 =
  30. 30.60 × 15 =
  31. 31.26 × 15 =
  32. 32.7 × 15 =
  33. 33.62 × 15 =
  34. 34.11 × 15 =
  35. 35.11 × 15 =
  36. 36.59 × 15 =
  37. 37.31 × 15 =
  38. 38.11 × 15 =
  39. 39.39 × 15 =
  40. 40.5 × 15 =

Answer key

  1. 900
  2. 195
  3. 300
  4. 165
  5. 510
  6. 285
  7. 60
  8. 585
  9. 135
  10. 255
  11. 960
  12. 630
  13. 60
  14. 195
  15. 645
  16. 75
  17. 90
  18. 105
  19. 225
  20. 90
  21. 720
  22. 255
  23. 360
  24. 270
  25. 915
  26. 735
  27. 105
  28. 585
  29. 420
  30. 900
  31. 390
  32. 105
  33. 930
  34. 165
  35. 165
  36. 885
  37. 465
  38. 165
  39. 585
  40. 75

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