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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 544 · 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. 1.16 × 15 =
  2. 2.24 × 15 =
  3. 3.48 × 15 =
  4. 4.58 × 15 =
  5. 5.11 × 15 =
  6. 6.6 × 15 =
  7. 7.5 × 15 =
  8. 8.49 × 15 =
  9. 9.11 × 15 =
  10. 10.57 × 15 =
  11. 11.16 × 15 =
  12. 12.41 × 15 =
  13. 13.42 × 15 =
  14. 14.31 × 15 =
  15. 15.28 × 15 =
  16. 16.11 × 15 =
  17. 17.32 × 15 =
  18. 18.8 × 15 =
  19. 19.25 × 15 =
  20. 20.4 × 15 =
  21. 21.35 × 15 =
  22. 22.9 × 15 =
  23. 23.17 × 15 =
  24. 24.63 × 15 =
  25. 25.43 × 15 =
  26. 26.10 × 15 =
  27. 27.24 × 15 =
  28. 28.12 × 15 =
  29. 29.16 × 15 =
  30. 30.28 × 15 =
  31. 31.15 × 15 =
  32. 32.17 × 15 =
  33. 33.57 × 15 =
  34. 34.60 × 15 =
  35. 35.64 × 15 =
  36. 36.60 × 15 =
  37. 37.62 × 15 =
  38. 38.4 × 15 =
  39. 39.19 × 15 =
  40. 40.23 × 15 =

Answer key

  1. 240
  2. 360
  3. 720
  4. 870
  5. 165
  6. 90
  7. 75
  8. 735
  9. 165
  10. 855
  11. 240
  12. 615
  13. 630
  14. 465
  15. 420
  16. 165
  17. 480
  18. 120
  19. 375
  20. 60
  21. 525
  22. 135
  23. 255
  24. 945
  25. 645
  26. 150
  27. 360
  28. 180
  29. 240
  30. 420
  31. 225
  32. 255
  33. 855
  34. 900
  35. 960
  36. 900
  37. 930
  38. 60
  39. 285
  40. 345

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