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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 190 · 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. 1.50% of 80 =
  2. 2.1% of 840 =
  3. 3.1% of 520 =
  4. 4.5% of 440 =
  5. 5.15% of 90 =
  6. 6.20% of 600 =
  7. 7.15% of 330 =
  8. 8.20% of 440 =
  9. 9.25% of 160 =
  10. 10.5% of 560 =
  11. 11.50% of 390 =
  12. 12.5% of 820 =
  13. 13.50% of 300 =
  14. 14.10% of 760 =
  15. 15.10% of 600 =
  16. 16.20% of 160 =
  17. 17.1% of 650 =
  18. 18.5% of 690 =
  19. 19.5% of 440 =
  20. 20.15% of 810 =
  21. 21.25% of 160 =
  22. 22.15% of 40 =
  23. 23.5% of 200 =
  24. 24.1% of 850 =
  25. 25.15% of 60 =
  26. 26.10% of 840 =
  27. 27.20% of 340 =
  28. 28.15% of 270 =
  29. 29.20% of 690 =
  30. 30.5% of 820 =
  31. 31.50% of 600 =
  32. 32.10% of 420 =
  33. 33.10% of 300 =
  34. 34.5% of 630 =
  35. 35.50% of 150 =
  36. 36.5% of 370 =
  37. 37.1% of 370 =
  38. 38.10% of 30 =
  39. 39.50% of 680 =
  40. 40.1% of 120 =

Answer key

  1. 40
  2. 8.4
  3. 5.2
  4. 22
  5. 13.5
  6. 120
  7. 49.5
  8. 88
  9. 40
  10. 28
  11. 195
  12. 41
  13. 150
  14. 76
  15. 60
  16. 32
  17. 6.5
  18. 34.5
  19. 22
  20. 121.5
  21. 40
  22. 6
  23. 10
  24. 8.5
  25. 9
  26. 84
  27. 68
  28. 40.5
  29. 138
  30. 41
  31. 300
  32. 42
  33. 30
  34. 31.5
  35. 75
  36. 18.5
  37. 3.7
  38. 3
  39. 340
  40. 1.2

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