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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 963 · 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. 1.50 × 15 =
  2. 2.18 × 15 =
  3. 3.22 × 15 =
  4. 4.19 × 15 =
  5. 5.27 × 15 =
  6. 6.37 × 15 =
  7. 7.48 × 15 =
  8. 8.50 × 15 =
  9. 9.27 × 15 =
  10. 10.47 × 15 =
  11. 11.5 × 15 =
  12. 12.42 × 15 =
  13. 13.9 × 15 =
  14. 14.18 × 15 =
  15. 15.39 × 15 =
  16. 16.54 × 15 =
  17. 17.25 × 15 =
  18. 18.46 × 15 =
  19. 19.61 × 15 =
  20. 20.20 × 15 =
  21. 21.37 × 15 =
  22. 22.28 × 15 =
  23. 23.52 × 15 =
  24. 24.7 × 15 =
  25. 25.23 × 15 =
  26. 26.41 × 15 =
  27. 27.4 × 15 =
  28. 28.5 × 15 =
  29. 29.8 × 15 =
  30. 30.50 × 15 =
  31. 31.62 × 15 =
  32. 32.29 × 15 =
  33. 33.44 × 15 =
  34. 34.17 × 15 =
  35. 35.64 × 15 =
  36. 36.49 × 15 =
  37. 37.63 × 15 =
  38. 38.52 × 15 =
  39. 39.38 × 15 =
  40. 40.61 × 15 =

Answer key

  1. 750
  2. 270
  3. 330
  4. 285
  5. 405
  6. 555
  7. 720
  8. 750
  9. 405
  10. 705
  11. 75
  12. 630
  13. 135
  14. 270
  15. 585
  16. 810
  17. 375
  18. 690
  19. 915
  20. 300
  21. 555
  22. 420
  23. 780
  24. 105
  25. 345
  26. 615
  27. 60
  28. 75
  29. 120
  30. 750
  31. 930
  32. 435
  33. 660
  34. 255
  35. 960
  36. 735
  37. 945
  38. 780
  39. 570
  40. 915

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