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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 217 · 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. 1.62 × 15 =
  2. 2.6 × 15 =
  3. 3.54 × 15 =
  4. 4.51 × 15 =
  5. 5.24 × 15 =
  6. 6.32 × 15 =
  7. 7.45 × 15 =
  8. 8.58 × 15 =
  9. 9.9 × 15 =
  10. 10.17 × 15 =
  11. 11.45 × 15 =
  12. 12.10 × 15 =
  13. 13.24 × 15 =
  14. 14.14 × 15 =
  15. 15.21 × 15 =
  16. 16.24 × 15 =
  17. 17.10 × 15 =
  18. 18.32 × 15 =
  19. 19.62 × 15 =
  20. 20.30 × 15 =
  21. 21.33 × 15 =
  22. 22.50 × 15 =
  23. 23.16 × 15 =
  24. 24.39 × 15 =
  25. 25.8 × 15 =
  26. 26.41 × 15 =
  27. 27.30 × 15 =
  28. 28.27 × 15 =
  29. 29.19 × 15 =
  30. 30.31 × 15 =
  31. 31.25 × 15 =
  32. 32.53 × 15 =
  33. 33.41 × 15 =
  34. 34.48 × 15 =
  35. 35.57 × 15 =
  36. 36.51 × 15 =
  37. 37.45 × 15 =
  38. 38.8 × 15 =
  39. 39.51 × 15 =
  40. 40.25 × 15 =

Answer key

  1. 930
  2. 90
  3. 810
  4. 765
  5. 360
  6. 480
  7. 675
  8. 870
  9. 135
  10. 255
  11. 675
  12. 150
  13. 360
  14. 210
  15. 315
  16. 360
  17. 150
  18. 480
  19. 930
  20. 450
  21. 495
  22. 750
  23. 240
  24. 585
  25. 120
  26. 615
  27. 450
  28. 405
  29. 285
  30. 465
  31. 375
  32. 795
  33. 615
  34. 720
  35. 855
  36. 765
  37. 675
  38. 120
  39. 765
  40. 375

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