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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 992 · 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. 1.11 × 15 =
  2. 2.56 × 15 =
  3. 3.34 × 15 =
  4. 4.53 × 15 =
  5. 5.10 × 15 =
  6. 6.64 × 15 =
  7. 7.64 × 15 =
  8. 8.49 × 15 =
  9. 9.13 × 15 =
  10. 10.8 × 15 =
  11. 11.31 × 15 =
  12. 12.5 × 15 =
  13. 13.53 × 15 =
  14. 14.60 × 15 =
  15. 15.51 × 15 =
  16. 16.52 × 15 =
  17. 17.62 × 15 =
  18. 18.22 × 15 =
  19. 19.20 × 15 =
  20. 20.24 × 15 =
  21. 21.56 × 15 =
  22. 22.10 × 15 =
  23. 23.60 × 15 =
  24. 24.59 × 15 =
  25. 25.17 × 15 =
  26. 26.58 × 15 =
  27. 27.14 × 15 =
  28. 28.27 × 15 =
  29. 29.58 × 15 =
  30. 30.27 × 15 =
  31. 31.33 × 15 =
  32. 32.37 × 15 =
  33. 33.48 × 15 =
  34. 34.39 × 15 =
  35. 35.31 × 15 =
  36. 36.55 × 15 =
  37. 37.12 × 15 =
  38. 38.18 × 15 =
  39. 39.6 × 15 =
  40. 40.50 × 15 =

Answer key

  1. 165
  2. 840
  3. 510
  4. 795
  5. 150
  6. 960
  7. 960
  8. 735
  9. 195
  10. 120
  11. 465
  12. 75
  13. 795
  14. 900
  15. 765
  16. 780
  17. 930
  18. 330
  19. 300
  20. 360
  21. 840
  22. 150
  23. 900
  24. 885
  25. 255
  26. 870
  27. 210
  28. 405
  29. 870
  30. 405
  31. 495
  32. 555
  33. 720
  34. 585
  35. 465
  36. 825
  37. 180
  38. 270
  39. 90
  40. 750

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