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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 619 · 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. 1.20% of 520 =
  2. 2.5% of 70 =
  3. 3.10% of 400 =
  4. 4.20% of 750 =
  5. 5.15% of 210 =
  6. 6.10% of 400 =
  7. 7.1% of 30 =
  8. 8.50% of 480 =
  9. 9.20% of 790 =
  10. 10.10% of 490 =
  11. 11.25% of 350 =
  12. 12.10% of 420 =
  13. 13.5% of 800 =
  14. 14.5% of 100 =
  15. 15.50% of 190 =
  16. 16.25% of 460 =
  17. 17.10% of 670 =
  18. 18.10% of 230 =
  19. 19.1% of 560 =
  20. 20.1% of 320 =
  21. 21.10% of 40 =
  22. 22.5% of 500 =
  23. 23.5% of 450 =
  24. 24.10% of 110 =
  25. 25.15% of 350 =
  26. 26.50% of 60 =
  27. 27.20% of 360 =
  28. 28.10% of 80 =
  29. 29.5% of 730 =
  30. 30.5% of 230 =
  31. 31.1% of 380 =
  32. 32.10% of 540 =
  33. 33.10% of 320 =
  34. 34.20% of 650 =
  35. 35.20% of 560 =
  36. 36.5% of 600 =
  37. 37.5% of 300 =
  38. 38.20% of 150 =
  39. 39.15% of 680 =
  40. 40.20% of 560 =

Answer key

  1. 104
  2. 3.5
  3. 40
  4. 150
  5. 31.5
  6. 40
  7. 0.3
  8. 240
  9. 158
  10. 49
  11. 87.5
  12. 42
  13. 40
  14. 5
  15. 95
  16. 115
  17. 67
  18. 23
  19. 5.6
  20. 3.2
  21. 4
  22. 25
  23. 22.5
  24. 11
  25. 52.5
  26. 30
  27. 72
  28. 8
  29. 36.5
  30. 11.5
  31. 3.8
  32. 54
  33. 32
  34. 130
  35. 112
  36. 30
  37. 15
  38. 30
  39. 102
  40. 112

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