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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 562 · 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. 1.10% of 190 =
  2. 2.25% of 170 =
  3. 3.25% of 300 =
  4. 4.25% of 790 =
  5. 5.5% of 190 =
  6. 6.1% of 820 =
  7. 7.25% of 120 =
  8. 8.20% of 230 =
  9. 9.5% of 620 =
  10. 10.5% of 290 =
  11. 11.50% of 160 =
  12. 12.20% of 830 =
  13. 13.10% of 280 =
  14. 14.50% of 50 =
  15. 15.20% of 830 =
  16. 16.10% of 830 =
  17. 17.25% of 240 =
  18. 18.10% of 460 =
  19. 19.20% of 710 =
  20. 20.20% of 30 =
  21. 21.20% of 550 =
  22. 22.25% of 310 =
  23. 23.5% of 230 =
  24. 24.25% of 290 =
  25. 25.20% of 740 =
  26. 26.1% of 420 =
  27. 27.10% of 360 =
  28. 28.25% of 110 =
  29. 29.10% of 640 =
  30. 30.25% of 750 =
  31. 31.15% of 630 =
  32. 32.5% of 620 =
  33. 33.15% of 280 =
  34. 34.20% of 140 =
  35. 35.1% of 190 =
  36. 36.50% of 140 =
  37. 37.10% of 470 =
  38. 38.10% of 540 =
  39. 39.1% of 210 =
  40. 40.15% of 630 =

Answer key

  1. 19
  2. 42.5
  3. 75
  4. 197.5
  5. 9.5
  6. 8.2
  7. 30
  8. 46
  9. 31
  10. 14.5
  11. 80
  12. 166
  13. 28
  14. 25
  15. 166
  16. 83
  17. 60
  18. 46
  19. 142
  20. 6
  21. 110
  22. 77.5
  23. 11.5
  24. 72.5
  25. 148
  26. 4.2
  27. 36
  28. 27.5
  29. 64
  30. 187.5
  31. 94.5
  32. 31
  33. 42
  34. 28
  35. 1.9
  36. 70
  37. 47
  38. 54
  39. 2.1
  40. 94.5

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