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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 739 · 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 90 =
  2. 2.15% of 540 =
  3. 3.50% of 250 =
  4. 4.1% of 280 =
  5. 5.25% of 240 =
  6. 6.50% of 260 =
  7. 7.15% of 240 =
  8. 8.25% of 120 =
  9. 9.1% of 620 =
  10. 10.50% of 280 =
  11. 11.5% of 360 =
  12. 12.10% of 390 =
  13. 13.5% of 30 =
  14. 14.25% of 600 =
  15. 15.15% of 290 =
  16. 16.20% of 140 =
  17. 17.20% of 780 =
  18. 18.50% of 190 =
  19. 19.50% of 860 =
  20. 20.5% of 280 =
  21. 21.25% of 540 =
  22. 22.1% of 430 =
  23. 23.20% of 260 =
  24. 24.15% of 20 =
  25. 25.10% of 20 =
  26. 26.50% of 190 =
  27. 27.25% of 210 =
  28. 28.50% of 160 =
  29. 29.20% of 530 =
  30. 30.1% of 140 =
  31. 31.5% of 760 =
  32. 32.10% of 460 =
  33. 33.5% of 690 =
  34. 34.15% of 250 =
  35. 35.50% of 350 =
  36. 36.50% of 600 =
  37. 37.10% of 800 =
  38. 38.10% of 250 =
  39. 39.20% of 830 =
  40. 40.20% of 220 =

Answer key

  1. 45
  2. 81
  3. 125
  4. 2.8
  5. 60
  6. 130
  7. 36
  8. 30
  9. 6.2
  10. 140
  11. 18
  12. 39
  13. 1.5
  14. 150
  15. 43.5
  16. 28
  17. 156
  18. 95
  19. 430
  20. 14
  21. 135
  22. 4.3
  23. 52
  24. 3
  25. 2
  26. 95
  27. 52.5
  28. 80
  29. 106
  30. 1.4
  31. 38
  32. 46
  33. 34.5
  34. 37.5
  35. 175
  36. 300
  37. 80
  38. 25
  39. 166
  40. 44

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