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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 767 · 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. 1.20% of 80 =
  2. 2.50% of 310 =
  3. 3.10% of 760 =
  4. 4.15% of 220 =
  5. 5.5% of 370 =
  6. 6.1% of 320 =
  7. 7.10% of 120 =
  8. 8.1% of 460 =
  9. 9.50% of 690 =
  10. 10.15% of 690 =
  11. 11.15% of 750 =
  12. 12.5% of 730 =
  13. 13.10% of 40 =
  14. 14.15% of 60 =
  15. 15.25% of 800 =
  16. 16.25% of 140 =
  17. 17.20% of 120 =
  18. 18.5% of 150 =
  19. 19.5% of 860 =
  20. 20.5% of 50 =
  21. 21.15% of 520 =
  22. 22.10% of 390 =
  23. 23.20% of 730 =
  24. 24.5% of 540 =
  25. 25.25% of 730 =
  26. 26.25% of 370 =
  27. 27.5% of 100 =
  28. 28.15% of 710 =
  29. 29.10% of 760 =
  30. 30.50% of 700 =
  31. 31.10% of 670 =
  32. 32.5% of 410 =
  33. 33.20% of 160 =
  34. 34.50% of 360 =
  35. 35.1% of 330 =
  36. 36.50% of 730 =
  37. 37.20% of 90 =
  38. 38.50% of 600 =
  39. 39.15% of 840 =
  40. 40.15% of 770 =

Answer key

  1. 16
  2. 155
  3. 76
  4. 33
  5. 18.5
  6. 3.2
  7. 12
  8. 4.6
  9. 345
  10. 103.5
  11. 112.5
  12. 36.5
  13. 4
  14. 9
  15. 200
  16. 35
  17. 24
  18. 7.5
  19. 43
  20. 2.5
  21. 78
  22. 39
  23. 146
  24. 27
  25. 182.5
  26. 92.5
  27. 5
  28. 106.5
  29. 76
  30. 350
  31. 67
  32. 20.5
  33. 32
  34. 180
  35. 3.3
  36. 365
  37. 18
  38. 300
  39. 126
  40. 115.5

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