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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 818 · 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 410 =
  2. 2.10% of 620 =
  3. 3.10% of 440 =
  4. 4.5% of 750 =
  5. 5.25% of 850 =
  6. 6.10% of 580 =
  7. 7.20% of 250 =
  8. 8.5% of 740 =
  9. 9.5% of 120 =
  10. 10.15% of 560 =
  11. 11.50% of 880 =
  12. 12.10% of 680 =
  13. 13.1% of 100 =
  14. 14.10% of 300 =
  15. 15.5% of 200 =
  16. 16.15% of 250 =
  17. 17.20% of 900 =
  18. 18.50% of 380 =
  19. 19.20% of 850 =
  20. 20.50% of 320 =
  21. 21.20% of 730 =
  22. 22.50% of 740 =
  23. 23.25% of 130 =
  24. 24.25% of 90 =
  25. 25.10% of 250 =
  26. 26.15% of 150 =
  27. 27.5% of 570 =
  28. 28.50% of 110 =
  29. 29.20% of 310 =
  30. 30.25% of 730 =
  31. 31.50% of 590 =
  32. 32.15% of 180 =
  33. 33.20% of 620 =
  34. 34.20% of 590 =
  35. 35.5% of 790 =
  36. 36.15% of 420 =
  37. 37.1% of 460 =
  38. 38.50% of 210 =
  39. 39.50% of 790 =
  40. 40.1% of 680 =

Answer key

  1. 205
  2. 62
  3. 44
  4. 37.5
  5. 212.5
  6. 58
  7. 50
  8. 37
  9. 6
  10. 84
  11. 440
  12. 68
  13. 1
  14. 30
  15. 10
  16. 37.5
  17. 180
  18. 190
  19. 170
  20. 160
  21. 146
  22. 370
  23. 32.5
  24. 22.5
  25. 25
  26. 22.5
  27. 28.5
  28. 55
  29. 62
  30. 182.5
  31. 295
  32. 27
  33. 124
  34. 118
  35. 39.5
  36. 63
  37. 4.6
  38. 105
  39. 395
  40. 6.8

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