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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 140 · 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 210 =
  2. 2.5% of 530 =
  3. 3.10% of 850 =
  4. 4.10% of 220 =
  5. 5.25% of 480 =
  6. 6.20% of 500 =
  7. 7.20% of 650 =
  8. 8.20% of 330 =
  9. 9.5% of 320 =
  10. 10.25% of 560 =
  11. 11.20% of 730 =
  12. 12.20% of 140 =
  13. 13.1% of 490 =
  14. 14.50% of 220 =
  15. 15.10% of 90 =
  16. 16.5% of 150 =
  17. 17.15% of 620 =
  18. 18.1% of 730 =
  19. 19.10% of 70 =
  20. 20.50% of 370 =
  21. 21.50% of 190 =
  22. 22.5% of 860 =
  23. 23.5% of 760 =
  24. 24.50% of 790 =
  25. 25.10% of 290 =
  26. 26.15% of 120 =
  27. 27.50% of 640 =
  28. 28.20% of 100 =
  29. 29.20% of 210 =
  30. 30.1% of 200 =
  31. 31.20% of 230 =
  32. 32.10% of 440 =
  33. 33.1% of 610 =
  34. 34.15% of 590 =
  35. 35.15% of 210 =
  36. 36.25% of 300 =
  37. 37.5% of 660 =
  38. 38.1% of 370 =
  39. 39.10% of 50 =
  40. 40.5% of 160 =

Answer key

  1. 52.5
  2. 26.5
  3. 85
  4. 22
  5. 120
  6. 100
  7. 130
  8. 66
  9. 16
  10. 140
  11. 146
  12. 28
  13. 4.9
  14. 110
  15. 9
  16. 7.5
  17. 93
  18. 7.3
  19. 7
  20. 185
  21. 95
  22. 43
  23. 38
  24. 395
  25. 29
  26. 18
  27. 320
  28. 20
  29. 42
  30. 2
  31. 46
  32. 44
  33. 6.1
  34. 88.5
  35. 31.5
  36. 75
  37. 33
  38. 3.7
  39. 5
  40. 8

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