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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 577 · 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 420 =
  2. 2.25% of 580 =
  3. 3.50% of 500 =
  4. 4.5% of 220 =
  5. 5.10% of 830 =
  6. 6.25% of 500 =
  7. 7.50% of 600 =
  8. 8.1% of 710 =
  9. 9.5% of 370 =
  10. 10.15% of 680 =
  11. 11.5% of 130 =
  12. 12.50% of 890 =
  13. 13.15% of 560 =
  14. 14.1% of 430 =
  15. 15.15% of 130 =
  16. 16.15% of 560 =
  17. 17.20% of 530 =
  18. 18.15% of 820 =
  19. 19.50% of 330 =
  20. 20.10% of 890 =
  21. 21.10% of 80 =
  22. 22.10% of 160 =
  23. 23.10% of 600 =
  24. 24.25% of 230 =
  25. 25.10% of 840 =
  26. 26.10% of 390 =
  27. 27.5% of 440 =
  28. 28.50% of 40 =
  29. 29.20% of 740 =
  30. 30.5% of 400 =
  31. 31.50% of 720 =
  32. 32.1% of 620 =
  33. 33.15% of 310 =
  34. 34.5% of 50 =
  35. 35.20% of 500 =
  36. 36.15% of 320 =
  37. 37.20% of 710 =
  38. 38.10% of 600 =
  39. 39.15% of 480 =
  40. 40.25% of 680 =

Answer key

  1. 84
  2. 145
  3. 250
  4. 11
  5. 83
  6. 125
  7. 300
  8. 7.1
  9. 18.5
  10. 102
  11. 6.5
  12. 445
  13. 84
  14. 4.3
  15. 19.5
  16. 84
  17. 106
  18. 123
  19. 165
  20. 89
  21. 8
  22. 16
  23. 60
  24. 57.5
  25. 84
  26. 39
  27. 22
  28. 20
  29. 148
  30. 20
  31. 360
  32. 6.2
  33. 46.5
  34. 2.5
  35. 100
  36. 48
  37. 142
  38. 60
  39. 72
  40. 170

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