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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 799 · 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. 1.5% of 50 =
  2. 2.25% of 390 =
  3. 3.15% of 630 =
  4. 4.5% of 310 =
  5. 5.5% of 670 =
  6. 6.20% of 150 =
  7. 7.50% of 190 =
  8. 8.50% of 110 =
  9. 9.15% of 390 =
  10. 10.5% of 740 =
  11. 11.25% of 770 =
  12. 12.10% of 880 =
  13. 13.5% of 450 =
  14. 14.50% of 100 =
  15. 15.5% of 540 =
  16. 16.15% of 700 =
  17. 17.25% of 110 =
  18. 18.20% of 740 =
  19. 19.10% of 130 =
  20. 20.50% of 120 =
  21. 21.10% of 200 =
  22. 22.20% of 410 =
  23. 23.50% of 540 =
  24. 24.1% of 370 =
  25. 25.25% of 590 =
  26. 26.1% of 260 =
  27. 27.1% of 470 =
  28. 28.5% of 570 =
  29. 29.15% of 110 =
  30. 30.5% of 170 =
  31. 31.10% of 440 =
  32. 32.10% of 430 =
  33. 33.10% of 60 =
  34. 34.25% of 400 =
  35. 35.5% of 810 =
  36. 36.20% of 890 =
  37. 37.50% of 280 =
  38. 38.5% of 410 =
  39. 39.20% of 710 =
  40. 40.50% of 620 =

Answer key

  1. 2.5
  2. 97.5
  3. 94.5
  4. 15.5
  5. 33.5
  6. 30
  7. 95
  8. 55
  9. 58.5
  10. 37
  11. 192.5
  12. 88
  13. 22.5
  14. 50
  15. 27
  16. 105
  17. 27.5
  18. 148
  19. 13
  20. 60
  21. 20
  22. 82
  23. 270
  24. 3.7
  25. 147.5
  26. 2.6
  27. 4.7
  28. 28.5
  29. 16.5
  30. 8.5
  31. 44
  32. 43
  33. 6
  34. 100
  35. 40.5
  36. 178
  37. 140
  38. 20.5
  39. 142
  40. 310

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