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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 595 · 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. 1.31 × 15 =
  2. 2.62 × 15 =
  3. 3.29 × 15 =
  4. 4.53 × 15 =
  5. 5.34 × 15 =
  6. 6.14 × 15 =
  7. 7.25 × 15 =
  8. 8.36 × 15 =
  9. 9.45 × 15 =
  10. 10.59 × 15 =
  11. 11.49 × 15 =
  12. 12.46 × 15 =
  13. 13.59 × 15 =
  14. 14.20 × 15 =
  15. 15.14 × 15 =
  16. 16.23 × 15 =
  17. 17.21 × 15 =
  18. 18.24 × 15 =
  19. 19.34 × 15 =
  20. 20.61 × 15 =
  21. 21.18 × 15 =
  22. 22.13 × 15 =
  23. 23.29 × 15 =
  24. 24.55 × 15 =
  25. 25.5 × 15 =
  26. 26.52 × 15 =
  27. 27.8 × 15 =
  28. 28.14 × 15 =
  29. 29.39 × 15 =
  30. 30.17 × 15 =
  31. 31.63 × 15 =
  32. 32.8 × 15 =
  33. 33.17 × 15 =
  34. 34.17 × 15 =
  35. 35.57 × 15 =
  36. 36.31 × 15 =
  37. 37.61 × 15 =
  38. 38.20 × 15 =
  39. 39.55 × 15 =
  40. 40.32 × 15 =

Answer key

  1. 465
  2. 930
  3. 435
  4. 795
  5. 510
  6. 210
  7. 375
  8. 540
  9. 675
  10. 885
  11. 735
  12. 690
  13. 885
  14. 300
  15. 210
  16. 345
  17. 315
  18. 360
  19. 510
  20. 915
  21. 270
  22. 195
  23. 435
  24. 825
  25. 75
  26. 780
  27. 120
  28. 210
  29. 585
  30. 255
  31. 945
  32. 120
  33. 255
  34. 255
  35. 855
  36. 465
  37. 915
  38. 300
  39. 825
  40. 480

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