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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 139 · 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. 1.32 × 15 =
  2. 2.64 × 15 =
  3. 3.43 × 15 =
  4. 4.39 × 15 =
  5. 5.45 × 15 =
  6. 6.34 × 15 =
  7. 7.51 × 15 =
  8. 8.20 × 15 =
  9. 9.63 × 15 =
  10. 10.51 × 15 =
  11. 11.12 × 15 =
  12. 12.50 × 15 =
  13. 13.29 × 15 =
  14. 14.23 × 15 =
  15. 15.27 × 15 =
  16. 16.34 × 15 =
  17. 17.49 × 15 =
  18. 18.17 × 15 =
  19. 19.32 × 15 =
  20. 20.12 × 15 =
  21. 21.51 × 15 =
  22. 22.63 × 15 =
  23. 23.45 × 15 =
  24. 24.51 × 15 =
  25. 25.54 × 15 =
  26. 26.6 × 15 =
  27. 27.45 × 15 =
  28. 28.9 × 15 =
  29. 29.45 × 15 =
  30. 30.53 × 15 =
  31. 31.47 × 15 =
  32. 32.5 × 15 =
  33. 33.31 × 15 =
  34. 34.31 × 15 =
  35. 35.52 × 15 =
  36. 36.23 × 15 =
  37. 37.54 × 15 =
  38. 38.51 × 15 =
  39. 39.42 × 15 =
  40. 40.40 × 15 =

Answer key

  1. 480
  2. 960
  3. 645
  4. 585
  5. 675
  6. 510
  7. 765
  8. 300
  9. 945
  10. 765
  11. 180
  12. 750
  13. 435
  14. 345
  15. 405
  16. 510
  17. 735
  18. 255
  19. 480
  20. 180
  21. 765
  22. 945
  23. 675
  24. 765
  25. 810
  26. 90
  27. 675
  28. 135
  29. 675
  30. 795
  31. 705
  32. 75
  33. 465
  34. 465
  35. 780
  36. 345
  37. 810
  38. 765
  39. 630
  40. 600

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