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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 289 · 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 500 =
  2. 2.5% of 850 =
  3. 3.25% of 420 =
  4. 4.50% of 440 =
  5. 5.25% of 280 =
  6. 6.5% of 450 =
  7. 7.25% of 140 =
  8. 8.20% of 800 =
  9. 9.1% of 620 =
  10. 10.50% of 260 =
  11. 11.20% of 210 =
  12. 12.25% of 780 =
  13. 13.15% of 110 =
  14. 14.5% of 130 =
  15. 15.5% of 570 =
  16. 16.5% of 180 =
  17. 17.15% of 120 =
  18. 18.50% of 180 =
  19. 19.10% of 420 =
  20. 20.10% of 170 =
  21. 21.15% of 320 =
  22. 22.25% of 170 =
  23. 23.20% of 730 =
  24. 24.5% of 190 =
  25. 25.15% of 880 =
  26. 26.1% of 170 =
  27. 27.15% of 150 =
  28. 28.5% of 160 =
  29. 29.20% of 540 =
  30. 30.25% of 220 =
  31. 31.25% of 30 =
  32. 32.25% of 270 =
  33. 33.20% of 880 =
  34. 34.1% of 20 =
  35. 35.1% of 90 =
  36. 36.5% of 530 =
  37. 37.20% of 670 =
  38. 38.5% of 380 =
  39. 39.50% of 90 =
  40. 40.25% of 570 =

Answer key

  1. 250
  2. 42.5
  3. 105
  4. 220
  5. 70
  6. 22.5
  7. 35
  8. 160
  9. 6.2
  10. 130
  11. 42
  12. 195
  13. 16.5
  14. 6.5
  15. 28.5
  16. 9
  17. 18
  18. 90
  19. 42
  20. 17
  21. 48
  22. 42.5
  23. 146
  24. 9.5
  25. 132
  26. 1.7
  27. 22.5
  28. 8
  29. 108
  30. 55
  31. 7.5
  32. 67.5
  33. 176
  34. 0.2
  35. 0.9
  36. 26.5
  37. 134
  38. 19
  39. 45
  40. 142.5

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