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Multiply by 15 Worksheet

Speed calculation lesson 8: × 15: ten plus half · Set 995 · 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. 2.20 × 15 =
  3. 3.30 × 15 =
  4. 4.47 × 15 =
  5. 5.7 × 15 =
  6. 6.11 × 15 =
  7. 7.39 × 15 =
  8. 8.58 × 15 =
  9. 9.9 × 15 =
  10. 10.8 × 15 =
  11. 11.56 × 15 =
  12. 12.27 × 15 =
  13. 13.26 × 15 =
  14. 14.35 × 15 =
  15. 15.60 × 15 =
  16. 16.6 × 15 =
  17. 17.39 × 15 =
  18. 18.54 × 15 =
  19. 19.10 × 15 =
  20. 20.24 × 15 =
  21. 21.4 × 15 =
  22. 22.30 × 15 =
  23. 23.7 × 15 =
  24. 24.61 × 15 =
  25. 25.5 × 15 =
  26. 26.27 × 15 =
  27. 27.9 × 15 =
  28. 28.33 × 15 =
  29. 29.7 × 15 =
  30. 30.10 × 15 =
  31. 31.20 × 15 =
  32. 32.46 × 15 =
  33. 33.26 × 15 =
  34. 34.40 × 15 =
  35. 35.19 × 15 =
  36. 36.4 × 15 =
  37. 37.30 × 15 =
  38. 38.33 × 15 =
  39. 39.9 × 15 =
  40. 40.27 × 15 =

Answer key

  1. 165
  2. 300
  3. 450
  4. 705
  5. 105
  6. 165
  7. 585
  8. 870
  9. 135
  10. 120
  11. 840
  12. 405
  13. 390
  14. 525
  15. 900
  16. 90
  17. 585
  18. 810
  19. 150
  20. 360
  21. 60
  22. 450
  23. 105
  24. 915
  25. 75
  26. 405
  27. 135
  28. 495
  29. 105
  30. 150
  31. 300
  32. 690
  33. 390
  34. 600
  35. 285
  36. 60
  37. 450
  38. 495
  39. 135
  40. 405

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