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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 363 · 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. 1.5% of 550 =
  2. 2.50% of 180 =
  3. 3.50% of 410 =
  4. 4.5% of 240 =
  5. 5.20% of 640 =
  6. 6.10% of 280 =
  7. 7.5% of 810 =
  8. 8.25% of 690 =
  9. 9.50% of 530 =
  10. 10.20% of 190 =
  11. 11.25% of 900 =
  12. 12.25% of 300 =
  13. 13.5% of 170 =
  14. 14.50% of 300 =
  15. 15.25% of 370 =
  16. 16.10% of 130 =
  17. 17.20% of 790 =
  18. 18.50% of 340 =
  19. 19.1% of 730 =
  20. 20.5% of 100 =
  21. 21.5% of 580 =
  22. 22.25% of 890 =
  23. 23.15% of 300 =
  24. 24.10% of 710 =
  25. 25.10% of 740 =
  26. 26.25% of 360 =
  27. 27.5% of 240 =
  28. 28.1% of 220 =
  29. 29.50% of 490 =
  30. 30.25% of 380 =
  31. 31.5% of 390 =
  32. 32.20% of 290 =
  33. 33.50% of 600 =
  34. 34.25% of 500 =
  35. 35.1% of 760 =
  36. 36.15% of 420 =
  37. 37.1% of 710 =
  38. 38.1% of 160 =
  39. 39.20% of 580 =
  40. 40.1% of 130 =

Answer key

  1. 27.5
  2. 90
  3. 205
  4. 12
  5. 128
  6. 28
  7. 40.5
  8. 172.5
  9. 265
  10. 38
  11. 225
  12. 75
  13. 8.5
  14. 150
  15. 92.5
  16. 13
  17. 158
  18. 170
  19. 7.3
  20. 5
  21. 29
  22. 222.5
  23. 45
  24. 71
  25. 74
  26. 90
  27. 12
  28. 2.2
  29. 245
  30. 95
  31. 19.5
  32. 58
  33. 300
  34. 125
  35. 7.6
  36. 63
  37. 7.1
  38. 1.6
  39. 116
  40. 1.3

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