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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 961 · 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. 1.53 × 15 =
  2. 2.24 × 15 =
  3. 3.12 × 15 =
  4. 4.33 × 15 =
  5. 5.40 × 15 =
  6. 6.52 × 15 =
  7. 7.15 × 15 =
  8. 8.29 × 15 =
  9. 9.41 × 15 =
  10. 10.27 × 15 =
  11. 11.16 × 15 =
  12. 12.17 × 15 =
  13. 13.62 × 15 =
  14. 14.22 × 15 =
  15. 15.27 × 15 =
  16. 16.56 × 15 =
  17. 17.59 × 15 =
  18. 18.20 × 15 =
  19. 19.10 × 15 =
  20. 20.22 × 15 =
  21. 21.48 × 15 =
  22. 22.61 × 15 =
  23. 23.14 × 15 =
  24. 24.9 × 15 =
  25. 25.24 × 15 =
  26. 26.12 × 15 =
  27. 27.54 × 15 =
  28. 28.14 × 15 =
  29. 29.19 × 15 =
  30. 30.37 × 15 =
  31. 31.31 × 15 =
  32. 32.5 × 15 =
  33. 33.41 × 15 =
  34. 34.36 × 15 =
  35. 35.7 × 15 =
  36. 36.64 × 15 =
  37. 37.28 × 15 =
  38. 38.24 × 15 =
  39. 39.52 × 15 =
  40. 40.9 × 15 =

Answer key

  1. 795
  2. 360
  3. 180
  4. 495
  5. 600
  6. 780
  7. 225
  8. 435
  9. 615
  10. 405
  11. 240
  12. 255
  13. 930
  14. 330
  15. 405
  16. 840
  17. 885
  18. 300
  19. 150
  20. 330
  21. 720
  22. 915
  23. 210
  24. 135
  25. 360
  26. 180
  27. 810
  28. 210
  29. 285
  30. 555
  31. 465
  32. 75
  33. 615
  34. 540
  35. 105
  36. 960
  37. 420
  38. 360
  39. 780
  40. 135

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