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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 406 · 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. 2.20% of 330 =
  3. 3.50% of 500 =
  4. 4.5% of 880 =
  5. 5.25% of 150 =
  6. 6.10% of 480 =
  7. 7.15% of 60 =
  8. 8.10% of 500 =
  9. 9.25% of 770 =
  10. 10.15% of 520 =
  11. 11.10% of 350 =
  12. 12.10% of 340 =
  13. 13.25% of 880 =
  14. 14.15% of 390 =
  15. 15.50% of 590 =
  16. 16.10% of 270 =
  17. 17.5% of 660 =
  18. 18.1% of 570 =
  19. 19.50% of 770 =
  20. 20.15% of 160 =
  21. 21.20% of 870 =
  22. 22.5% of 870 =
  23. 23.15% of 260 =
  24. 24.10% of 70 =
  25. 25.20% of 810 =
  26. 26.15% of 800 =
  27. 27.10% of 210 =
  28. 28.20% of 620 =
  29. 29.50% of 890 =
  30. 30.10% of 90 =
  31. 31.1% of 530 =
  32. 32.50% of 900 =
  33. 33.10% of 880 =
  34. 34.5% of 810 =
  35. 35.25% of 380 =
  36. 36.15% of 180 =
  37. 37.25% of 730 =
  38. 38.25% of 270 =
  39. 39.15% of 100 =
  40. 40.20% of 880 =

Answer key

  1. 19
  2. 66
  3. 250
  4. 44
  5. 37.5
  6. 48
  7. 9
  8. 50
  9. 192.5
  10. 78
  11. 35
  12. 34
  13. 220
  14. 58.5
  15. 295
  16. 27
  17. 33
  18. 5.7
  19. 385
  20. 24
  21. 174
  22. 43.5
  23. 39
  24. 7
  25. 162
  26. 120
  27. 21
  28. 124
  29. 445
  30. 9
  31. 5.3
  32. 450
  33. 88
  34. 40.5
  35. 95
  36. 27
  37. 182.5
  38. 67.5
  39. 15
  40. 176

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