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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 827 · 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. 1.15% of 800 =
  2. 2.5% of 690 =
  3. 3.10% of 240 =
  4. 4.1% of 500 =
  5. 5.25% of 100 =
  6. 6.1% of 890 =
  7. 7.15% of 140 =
  8. 8.50% of 230 =
  9. 9.10% of 230 =
  10. 10.15% of 900 =
  11. 11.50% of 290 =
  12. 12.5% of 860 =
  13. 13.15% of 620 =
  14. 14.10% of 160 =
  15. 15.20% of 170 =
  16. 16.5% of 190 =
  17. 17.50% of 670 =
  18. 18.20% of 250 =
  19. 19.20% of 290 =
  20. 20.5% of 830 =
  21. 21.20% of 650 =
  22. 22.50% of 190 =
  23. 23.5% of 220 =
  24. 24.50% of 190 =
  25. 25.50% of 450 =
  26. 26.10% of 210 =
  27. 27.50% of 880 =
  28. 28.1% of 400 =
  29. 29.25% of 750 =
  30. 30.15% of 220 =
  31. 31.25% of 800 =
  32. 32.5% of 60 =
  33. 33.15% of 710 =
  34. 34.15% of 250 =
  35. 35.15% of 880 =
  36. 36.25% of 320 =
  37. 37.10% of 160 =
  38. 38.20% of 330 =
  39. 39.5% of 600 =
  40. 40.10% of 270 =

Answer key

  1. 120
  2. 34.5
  3. 24
  4. 5
  5. 25
  6. 8.9
  7. 21
  8. 115
  9. 23
  10. 135
  11. 145
  12. 43
  13. 93
  14. 16
  15. 34
  16. 9.5
  17. 335
  18. 50
  19. 58
  20. 41.5
  21. 130
  22. 95
  23. 11
  24. 95
  25. 225
  26. 21
  27. 440
  28. 4
  29. 187.5
  30. 33
  31. 200
  32. 3
  33. 106.5
  34. 37.5
  35. 132
  36. 80
  37. 16
  38. 66
  39. 30
  40. 27

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