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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 91 · 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. 1.32 × 15 =
  2. 2.39 × 15 =
  3. 3.20 × 15 =
  4. 4.9 × 15 =
  5. 5.42 × 15 =
  6. 6.19 × 15 =
  7. 7.6 × 15 =
  8. 8.63 × 15 =
  9. 9.40 × 15 =
  10. 10.8 × 15 =
  11. 11.19 × 15 =
  12. 12.41 × 15 =
  13. 13.19 × 15 =
  14. 14.24 × 15 =
  15. 15.45 × 15 =
  16. 16.28 × 15 =
  17. 17.59 × 15 =
  18. 18.52 × 15 =
  19. 19.20 × 15 =
  20. 20.57 × 15 =
  21. 21.40 × 15 =
  22. 22.38 × 15 =
  23. 23.16 × 15 =
  24. 24.21 × 15 =
  25. 25.34 × 15 =
  26. 26.8 × 15 =
  27. 27.58 × 15 =
  28. 28.57 × 15 =
  29. 29.13 × 15 =
  30. 30.15 × 15 =
  31. 31.15 × 15 =
  32. 32.39 × 15 =
  33. 33.14 × 15 =
  34. 34.53 × 15 =
  35. 35.25 × 15 =
  36. 36.59 × 15 =
  37. 37.55 × 15 =
  38. 38.26 × 15 =
  39. 39.61 × 15 =
  40. 40.37 × 15 =

Answer key

  1. 480
  2. 585
  3. 300
  4. 135
  5. 630
  6. 285
  7. 90
  8. 945
  9. 600
  10. 120
  11. 285
  12. 615
  13. 285
  14. 360
  15. 675
  16. 420
  17. 885
  18. 780
  19. 300
  20. 855
  21. 600
  22. 570
  23. 240
  24. 315
  25. 510
  26. 120
  27. 870
  28. 855
  29. 195
  30. 225
  31. 225
  32. 585
  33. 210
  34. 795
  35. 375
  36. 885
  37. 825
  38. 390
  39. 915
  40. 555

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