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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 708 · 40 questions
TalentJR

The fast method (Build from 10%): 10%: divide by 10. 1%: divide by 100. 5% = half of 10%, 20% = double 10%, 15% = 10% + 5%. 50% = half, 25% = half of a half.

NameDateTime takenScore ___ / 40
  1. 1.1% of 80 =
  2. 2.50% of 180 =
  3. 3.10% of 90 =
  4. 4.25% of 360 =
  5. 5.1% of 780 =
  6. 6.15% of 50 =
  7. 7.25% of 470 =
  8. 8.5% of 210 =
  9. 9.20% of 430 =
  10. 10.1% of 80 =
  11. 11.1% of 620 =
  12. 12.25% of 200 =
  13. 13.5% of 350 =
  14. 14.25% of 190 =
  15. 15.10% of 200 =
  16. 16.50% of 860 =
  17. 17.50% of 430 =
  18. 18.10% of 760 =
  19. 19.15% of 420 =
  20. 20.50% of 40 =
  21. 21.50% of 640 =
  22. 22.10% of 520 =
  23. 23.5% of 370 =
  24. 24.50% of 20 =
  25. 25.10% of 290 =
  26. 26.20% of 810 =
  27. 27.50% of 890 =
  28. 28.15% of 90 =
  29. 29.50% of 350 =
  30. 30.5% of 530 =
  31. 31.15% of 50 =
  32. 32.50% of 60 =
  33. 33.10% of 60 =
  34. 34.5% of 690 =
  35. 35.1% of 690 =
  36. 36.20% of 180 =
  37. 37.5% of 790 =
  38. 38.50% of 520 =
  39. 39.25% of 800 =
  40. 40.5% of 390 =

Answer key

  1. 0.8
  2. 90
  3. 9
  4. 90
  5. 7.8
  6. 7.5
  7. 117.5
  8. 10.5
  9. 86
  10. 0.8
  11. 6.2
  12. 50
  13. 17.5
  14. 47.5
  15. 20
  16. 430
  17. 215
  18. 76
  19. 63
  20. 20
  21. 320
  22. 52
  23. 18.5
  24. 10
  25. 29
  26. 162
  27. 445
  28. 13.5
  29. 175
  30. 26.5
  31. 7.5
  32. 30
  33. 6
  34. 34.5
  35. 6.9
  36. 36
  37. 39.5
  38. 260
  39. 200
  40. 19.5

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