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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 95 · 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. 1.50% of 300 =
  2. 2.5% of 210 =
  3. 3.15% of 730 =
  4. 4.10% of 90 =
  5. 5.15% of 100 =
  6. 6.25% of 70 =
  7. 7.1% of 730 =
  8. 8.50% of 350 =
  9. 9.20% of 180 =
  10. 10.15% of 230 =
  11. 11.1% of 530 =
  12. 12.25% of 390 =
  13. 13.20% of 690 =
  14. 14.25% of 110 =
  15. 15.5% of 90 =
  16. 16.20% of 330 =
  17. 17.10% of 720 =
  18. 18.5% of 30 =
  19. 19.1% of 290 =
  20. 20.10% of 90 =
  21. 21.1% of 210 =
  22. 22.10% of 320 =
  23. 23.5% of 20 =
  24. 24.25% of 140 =
  25. 25.20% of 420 =
  26. 26.50% of 390 =
  27. 27.50% of 460 =
  28. 28.15% of 520 =
  29. 29.10% of 760 =
  30. 30.50% of 20 =
  31. 31.15% of 880 =
  32. 32.5% of 560 =
  33. 33.10% of 340 =
  34. 34.10% of 100 =
  35. 35.20% of 200 =
  36. 36.20% of 580 =
  37. 37.10% of 270 =
  38. 38.25% of 570 =
  39. 39.1% of 140 =
  40. 40.20% of 430 =

Answer key

  1. 150
  2. 10.5
  3. 109.5
  4. 9
  5. 15
  6. 17.5
  7. 7.3
  8. 175
  9. 36
  10. 34.5
  11. 5.3
  12. 97.5
  13. 138
  14. 27.5
  15. 4.5
  16. 66
  17. 72
  18. 1.5
  19. 2.9
  20. 9
  21. 2.1
  22. 32
  23. 1
  24. 35
  25. 84
  26. 195
  27. 230
  28. 78
  29. 76
  30. 10
  31. 132
  32. 28
  33. 34
  34. 10
  35. 40
  36. 116
  37. 27
  38. 142.5
  39. 1.4
  40. 86

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