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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 752 · 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 570 =
  2. 2.5% of 60 =
  3. 3.15% of 720 =
  4. 4.10% of 770 =
  5. 5.1% of 620 =
  6. 6.1% of 370 =
  7. 7.10% of 150 =
  8. 8.25% of 390 =
  9. 9.10% of 810 =
  10. 10.10% of 150 =
  11. 11.1% of 400 =
  12. 12.10% of 200 =
  13. 13.5% of 40 =
  14. 14.50% of 600 =
  15. 15.50% of 710 =
  16. 16.1% of 190 =
  17. 17.50% of 800 =
  18. 18.25% of 390 =
  19. 19.15% of 530 =
  20. 20.5% of 350 =
  21. 21.1% of 70 =
  22. 22.5% of 870 =
  23. 23.10% of 820 =
  24. 24.15% of 350 =
  25. 25.50% of 340 =
  26. 26.50% of 540 =
  27. 27.20% of 800 =
  28. 28.10% of 370 =
  29. 29.10% of 200 =
  30. 30.20% of 130 =
  31. 31.5% of 590 =
  32. 32.15% of 510 =
  33. 33.10% of 150 =
  34. 34.1% of 650 =
  35. 35.15% of 610 =
  36. 36.1% of 70 =
  37. 37.1% of 510 =
  38. 38.50% of 620 =
  39. 39.25% of 310 =
  40. 40.25% of 130 =

Answer key

  1. 28.5
  2. 3
  3. 108
  4. 77
  5. 6.2
  6. 3.7
  7. 15
  8. 97.5
  9. 81
  10. 15
  11. 4
  12. 20
  13. 2
  14. 300
  15. 355
  16. 1.9
  17. 400
  18. 97.5
  19. 79.5
  20. 17.5
  21. 0.7
  22. 43.5
  23. 82
  24. 52.5
  25. 170
  26. 270
  27. 160
  28. 37
  29. 20
  30. 26
  31. 29.5
  32. 76.5
  33. 15
  34. 6.5
  35. 91.5
  36. 0.7
  37. 5.1
  38. 310
  39. 77.5
  40. 32.5

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