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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 274 · 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. 1.25% of 760 =
  2. 2.15% of 270 =
  3. 3.5% of 30 =
  4. 4.50% of 290 =
  5. 5.10% of 340 =
  6. 6.5% of 140 =
  7. 7.10% of 610 =
  8. 8.10% of 900 =
  9. 9.25% of 140 =
  10. 10.15% of 750 =
  11. 11.10% of 190 =
  12. 12.10% of 720 =
  13. 13.10% of 440 =
  14. 14.15% of 740 =
  15. 15.50% of 130 =
  16. 16.25% of 350 =
  17. 17.25% of 740 =
  18. 18.20% of 190 =
  19. 19.20% of 160 =
  20. 20.5% of 900 =
  21. 21.50% of 800 =
  22. 22.50% of 800 =
  23. 23.15% of 700 =
  24. 24.10% of 430 =
  25. 25.5% of 890 =
  26. 26.10% of 230 =
  27. 27.25% of 650 =
  28. 28.1% of 100 =
  29. 29.25% of 230 =
  30. 30.25% of 20 =
  31. 31.20% of 100 =
  32. 32.10% of 430 =
  33. 33.15% of 530 =
  34. 34.10% of 110 =
  35. 35.25% of 380 =
  36. 36.10% of 900 =
  37. 37.25% of 340 =
  38. 38.25% of 720 =
  39. 39.15% of 450 =
  40. 40.25% of 130 =

Answer key

  1. 190
  2. 40.5
  3. 1.5
  4. 145
  5. 34
  6. 7
  7. 61
  8. 90
  9. 35
  10. 112.5
  11. 19
  12. 72
  13. 44
  14. 111
  15. 65
  16. 87.5
  17. 185
  18. 38
  19. 32
  20. 45
  21. 400
  22. 400
  23. 105
  24. 43
  25. 44.5
  26. 23
  27. 162.5
  28. 1
  29. 57.5
  30. 5
  31. 20
  32. 43
  33. 79.5
  34. 11
  35. 95
  36. 90
  37. 85
  38. 180
  39. 67.5
  40. 32.5

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