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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 699 · 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. 1.16 × 15 =
  2. 2.16 × 15 =
  3. 3.22 × 15 =
  4. 4.37 × 15 =
  5. 5.30 × 15 =
  6. 6.64 × 15 =
  7. 7.47 × 15 =
  8. 8.5 × 15 =
  9. 9.42 × 15 =
  10. 10.15 × 15 =
  11. 11.30 × 15 =
  12. 12.11 × 15 =
  13. 13.15 × 15 =
  14. 14.64 × 15 =
  15. 15.31 × 15 =
  16. 16.33 × 15 =
  17. 17.11 × 15 =
  18. 18.43 × 15 =
  19. 19.30 × 15 =
  20. 20.58 × 15 =
  21. 21.8 × 15 =
  22. 22.44 × 15 =
  23. 23.7 × 15 =
  24. 24.62 × 15 =
  25. 25.51 × 15 =
  26. 26.53 × 15 =
  27. 27.50 × 15 =
  28. 28.55 × 15 =
  29. 29.8 × 15 =
  30. 30.25 × 15 =
  31. 31.35 × 15 =
  32. 32.29 × 15 =
  33. 33.35 × 15 =
  34. 34.6 × 15 =
  35. 35.60 × 15 =
  36. 36.63 × 15 =
  37. 37.44 × 15 =
  38. 38.45 × 15 =
  39. 39.55 × 15 =
  40. 40.13 × 15 =

Answer key

  1. 240
  2. 240
  3. 330
  4. 555
  5. 450
  6. 960
  7. 705
  8. 75
  9. 630
  10. 225
  11. 450
  12. 165
  13. 225
  14. 960
  15. 465
  16. 495
  17. 165
  18. 645
  19. 450
  20. 870
  21. 120
  22. 660
  23. 105
  24. 930
  25. 765
  26. 795
  27. 750
  28. 825
  29. 120
  30. 375
  31. 525
  32. 435
  33. 525
  34. 90
  35. 900
  36. 945
  37. 660
  38. 675
  39. 825
  40. 195

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