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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 187 · 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. 1.10% of 800 =
  2. 2.15% of 180 =
  3. 3.50% of 690 =
  4. 4.20% of 590 =
  5. 5.15% of 740 =
  6. 6.5% of 850 =
  7. 7.25% of 50 =
  8. 8.50% of 690 =
  9. 9.10% of 680 =
  10. 10.25% of 150 =
  11. 11.20% of 750 =
  12. 12.20% of 870 =
  13. 13.5% of 780 =
  14. 14.50% of 230 =
  15. 15.1% of 530 =
  16. 16.1% of 270 =
  17. 17.5% of 400 =
  18. 18.25% of 300 =
  19. 19.10% of 510 =
  20. 20.25% of 130 =
  21. 21.5% of 40 =
  22. 22.20% of 870 =
  23. 23.10% of 270 =
  24. 24.5% of 450 =
  25. 25.20% of 440 =
  26. 26.5% of 520 =
  27. 27.10% of 250 =
  28. 28.50% of 40 =
  29. 29.10% of 200 =
  30. 30.5% of 480 =
  31. 31.10% of 60 =
  32. 32.1% of 70 =
  33. 33.25% of 130 =
  34. 34.10% of 140 =
  35. 35.50% of 380 =
  36. 36.15% of 450 =
  37. 37.5% of 900 =
  38. 38.20% of 630 =
  39. 39.15% of 180 =
  40. 40.20% of 280 =

Answer key

  1. 80
  2. 27
  3. 345
  4. 118
  5. 111
  6. 42.5
  7. 12.5
  8. 345
  9. 68
  10. 37.5
  11. 150
  12. 174
  13. 39
  14. 115
  15. 5.3
  16. 2.7
  17. 20
  18. 75
  19. 51
  20. 32.5
  21. 2
  22. 174
  23. 27
  24. 22.5
  25. 88
  26. 26
  27. 25
  28. 20
  29. 20
  30. 24
  31. 6
  32. 0.7
  33. 32.5
  34. 14
  35. 190
  36. 67.5
  37. 45
  38. 126
  39. 27
  40. 56

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