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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 930 · 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. 1.30 × 15 =
  2. 2.52 × 15 =
  3. 3.32 × 15 =
  4. 4.32 × 15 =
  5. 5.27 × 15 =
  6. 6.26 × 15 =
  7. 7.39 × 15 =
  8. 8.64 × 15 =
  9. 9.50 × 15 =
  10. 10.9 × 15 =
  11. 11.15 × 15 =
  12. 12.33 × 15 =
  13. 13.59 × 15 =
  14. 14.35 × 15 =
  15. 15.45 × 15 =
  16. 16.54 × 15 =
  17. 17.46 × 15 =
  18. 18.32 × 15 =
  19. 19.18 × 15 =
  20. 20.58 × 15 =
  21. 21.20 × 15 =
  22. 22.45 × 15 =
  23. 23.34 × 15 =
  24. 24.42 × 15 =
  25. 25.27 × 15 =
  26. 26.33 × 15 =
  27. 27.21 × 15 =
  28. 28.46 × 15 =
  29. 29.22 × 15 =
  30. 30.5 × 15 =
  31. 31.42 × 15 =
  32. 32.41 × 15 =
  33. 33.20 × 15 =
  34. 34.47 × 15 =
  35. 35.15 × 15 =
  36. 36.9 × 15 =
  37. 37.51 × 15 =
  38. 38.48 × 15 =
  39. 39.55 × 15 =
  40. 40.23 × 15 =

Answer key

  1. 450
  2. 780
  3. 480
  4. 480
  5. 405
  6. 390
  7. 585
  8. 960
  9. 750
  10. 135
  11. 225
  12. 495
  13. 885
  14. 525
  15. 675
  16. 810
  17. 690
  18. 480
  19. 270
  20. 870
  21. 300
  22. 675
  23. 510
  24. 630
  25. 405
  26. 495
  27. 315
  28. 690
  29. 330
  30. 75
  31. 630
  32. 615
  33. 300
  34. 705
  35. 225
  36. 135
  37. 765
  38. 720
  39. 825
  40. 345

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