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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 156 · 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. 1.20% of 240 =
  2. 2.1% of 770 =
  3. 3.15% of 600 =
  4. 4.20% of 130 =
  5. 5.1% of 720 =
  6. 6.5% of 470 =
  7. 7.20% of 310 =
  8. 8.25% of 300 =
  9. 9.50% of 20 =
  10. 10.10% of 880 =
  11. 11.50% of 430 =
  12. 12.20% of 900 =
  13. 13.5% of 790 =
  14. 14.15% of 30 =
  15. 15.5% of 620 =
  16. 16.50% of 480 =
  17. 17.20% of 250 =
  18. 18.10% of 590 =
  19. 19.25% of 250 =
  20. 20.20% of 800 =
  21. 21.50% of 120 =
  22. 22.20% of 80 =
  23. 23.10% of 410 =
  24. 24.25% of 490 =
  25. 25.1% of 720 =
  26. 26.25% of 650 =
  27. 27.10% of 130 =
  28. 28.20% of 680 =
  29. 29.25% of 390 =
  30. 30.10% of 160 =
  31. 31.1% of 310 =
  32. 32.1% of 390 =
  33. 33.20% of 730 =
  34. 34.5% of 790 =
  35. 35.10% of 380 =
  36. 36.5% of 290 =
  37. 37.10% of 310 =
  38. 38.50% of 410 =
  39. 39.25% of 360 =
  40. 40.20% of 120 =

Answer key

  1. 48
  2. 7.7
  3. 90
  4. 26
  5. 7.2
  6. 23.5
  7. 62
  8. 75
  9. 10
  10. 88
  11. 215
  12. 180
  13. 39.5
  14. 4.5
  15. 31
  16. 240
  17. 50
  18. 59
  19. 62.5
  20. 160
  21. 60
  22. 16
  23. 41
  24. 122.5
  25. 7.2
  26. 162.5
  27. 13
  28. 136
  29. 97.5
  30. 16
  31. 3.1
  32. 3.9
  33. 146
  34. 39.5
  35. 38
  36. 14.5
  37. 31
  38. 205
  39. 90
  40. 24

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