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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 950 · 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. 1.18 × 15 =
  2. 2.63 × 15 =
  3. 3.52 × 15 =
  4. 4.22 × 15 =
  5. 5.6 × 15 =
  6. 6.59 × 15 =
  7. 7.63 × 15 =
  8. 8.5 × 15 =
  9. 9.6 × 15 =
  10. 10.10 × 15 =
  11. 11.13 × 15 =
  12. 12.47 × 15 =
  13. 13.25 × 15 =
  14. 14.44 × 15 =
  15. 15.29 × 15 =
  16. 16.60 × 15 =
  17. 17.46 × 15 =
  18. 18.57 × 15 =
  19. 19.37 × 15 =
  20. 20.24 × 15 =
  21. 21.10 × 15 =
  22. 22.11 × 15 =
  23. 23.11 × 15 =
  24. 24.10 × 15 =
  25. 25.44 × 15 =
  26. 26.21 × 15 =
  27. 27.6 × 15 =
  28. 28.6 × 15 =
  29. 29.33 × 15 =
  30. 30.24 × 15 =
  31. 31.4 × 15 =
  32. 32.9 × 15 =
  33. 33.11 × 15 =
  34. 34.7 × 15 =
  35. 35.23 × 15 =
  36. 36.19 × 15 =
  37. 37.24 × 15 =
  38. 38.35 × 15 =
  39. 39.23 × 15 =
  40. 40.55 × 15 =

Answer key

  1. 270
  2. 945
  3. 780
  4. 330
  5. 90
  6. 885
  7. 945
  8. 75
  9. 90
  10. 150
  11. 195
  12. 705
  13. 375
  14. 660
  15. 435
  16. 900
  17. 690
  18. 855
  19. 555
  20. 360
  21. 150
  22. 165
  23. 165
  24. 150
  25. 660
  26. 315
  27. 90
  28. 90
  29. 495
  30. 360
  31. 60
  32. 135
  33. 165
  34. 105
  35. 345
  36. 285
  37. 360
  38. 525
  39. 345
  40. 825

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