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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 742 · 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. 1.61 × 15 =
  2. 2.33 × 15 =
  3. 3.38 × 15 =
  4. 4.63 × 15 =
  5. 5.54 × 15 =
  6. 6.9 × 15 =
  7. 7.47 × 15 =
  8. 8.55 × 15 =
  9. 9.49 × 15 =
  10. 10.38 × 15 =
  11. 11.18 × 15 =
  12. 12.11 × 15 =
  13. 13.40 × 15 =
  14. 14.45 × 15 =
  15. 15.16 × 15 =
  16. 16.43 × 15 =
  17. 17.15 × 15 =
  18. 18.54 × 15 =
  19. 19.39 × 15 =
  20. 20.35 × 15 =
  21. 21.49 × 15 =
  22. 22.31 × 15 =
  23. 23.33 × 15 =
  24. 24.18 × 15 =
  25. 25.25 × 15 =
  26. 26.47 × 15 =
  27. 27.15 × 15 =
  28. 28.23 × 15 =
  29. 29.19 × 15 =
  30. 30.24 × 15 =
  31. 31.20 × 15 =
  32. 32.51 × 15 =
  33. 33.62 × 15 =
  34. 34.15 × 15 =
  35. 35.47 × 15 =
  36. 36.16 × 15 =
  37. 37.5 × 15 =
  38. 38.47 × 15 =
  39. 39.12 × 15 =
  40. 40.62 × 15 =

Answer key

  1. 915
  2. 495
  3. 570
  4. 945
  5. 810
  6. 135
  7. 705
  8. 825
  9. 735
  10. 570
  11. 270
  12. 165
  13. 600
  14. 675
  15. 240
  16. 645
  17. 225
  18. 810
  19. 585
  20. 525
  21. 735
  22. 465
  23. 495
  24. 270
  25. 375
  26. 705
  27. 225
  28. 345
  29. 285
  30. 360
  31. 300
  32. 765
  33. 930
  34. 225
  35. 705
  36. 240
  37. 75
  38. 705
  39. 180
  40. 930

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