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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 503 · 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 620 =
  2. 2.25% of 330 =
  3. 3.25% of 890 =
  4. 4.5% of 260 =
  5. 5.10% of 30 =
  6. 6.20% of 460 =
  7. 7.10% of 760 =
  8. 8.50% of 260 =
  9. 9.15% of 430 =
  10. 10.10% of 140 =
  11. 11.1% of 140 =
  12. 12.20% of 50 =
  13. 13.15% of 760 =
  14. 14.20% of 430 =
  15. 15.50% of 760 =
  16. 16.5% of 440 =
  17. 17.5% of 70 =
  18. 18.25% of 550 =
  19. 19.10% of 800 =
  20. 20.20% of 30 =
  21. 21.10% of 820 =
  22. 22.15% of 130 =
  23. 23.1% of 710 =
  24. 24.10% of 190 =
  25. 25.10% of 680 =
  26. 26.50% of 400 =
  27. 27.20% of 820 =
  28. 28.5% of 30 =
  29. 29.15% of 180 =
  30. 30.10% of 350 =
  31. 31.20% of 340 =
  32. 32.1% of 700 =
  33. 33.5% of 900 =
  34. 34.20% of 620 =
  35. 35.20% of 350 =
  36. 36.50% of 260 =
  37. 37.15% of 100 =
  38. 38.15% of 180 =
  39. 39.20% of 350 =
  40. 40.15% of 770 =

Answer key

  1. 6.2
  2. 82.5
  3. 222.5
  4. 13
  5. 3
  6. 92
  7. 76
  8. 130
  9. 64.5
  10. 14
  11. 1.4
  12. 10
  13. 114
  14. 86
  15. 380
  16. 22
  17. 3.5
  18. 137.5
  19. 80
  20. 6
  21. 82
  22. 19.5
  23. 7.1
  24. 19
  25. 68
  26. 200
  27. 164
  28. 1.5
  29. 27
  30. 35
  31. 68
  32. 7
  33. 45
  34. 124
  35. 70
  36. 130
  37. 15
  38. 27
  39. 70
  40. 115.5

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