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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 717 · 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. 1.1% of 280 =
  2. 2.1% of 470 =
  3. 3.15% of 220 =
  4. 4.1% of 220 =
  5. 5.15% of 380 =
  6. 6.10% of 30 =
  7. 7.1% of 690 =
  8. 8.50% of 810 =
  9. 9.15% of 290 =
  10. 10.50% of 300 =
  11. 11.1% of 520 =
  12. 12.20% of 720 =
  13. 13.50% of 310 =
  14. 14.25% of 50 =
  15. 15.5% of 490 =
  16. 16.15% of 270 =
  17. 17.5% of 60 =
  18. 18.20% of 880 =
  19. 19.15% of 150 =
  20. 20.10% of 650 =
  21. 21.15% of 120 =
  22. 22.50% of 360 =
  23. 23.15% of 110 =
  24. 24.25% of 40 =
  25. 25.25% of 410 =
  26. 26.25% of 560 =
  27. 27.25% of 200 =
  28. 28.1% of 900 =
  29. 29.5% of 650 =
  30. 30.50% of 760 =
  31. 31.10% of 810 =
  32. 32.5% of 480 =
  33. 33.5% of 570 =
  34. 34.50% of 100 =
  35. 35.50% of 660 =
  36. 36.1% of 380 =
  37. 37.25% of 330 =
  38. 38.5% of 220 =
  39. 39.20% of 880 =
  40. 40.5% of 290 =

Answer key

  1. 2.8
  2. 4.7
  3. 33
  4. 2.2
  5. 57
  6. 3
  7. 6.9
  8. 405
  9. 43.5
  10. 150
  11. 5.2
  12. 144
  13. 155
  14. 12.5
  15. 24.5
  16. 40.5
  17. 3
  18. 176
  19. 22.5
  20. 65
  21. 18
  22. 180
  23. 16.5
  24. 10
  25. 102.5
  26. 140
  27. 50
  28. 9
  29. 32.5
  30. 380
  31. 81
  32. 24
  33. 28.5
  34. 50
  35. 330
  36. 3.8
  37. 82.5
  38. 11
  39. 176
  40. 14.5

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