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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 326 · 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 400 =
  2. 2.5% of 760 =
  3. 3.1% of 360 =
  4. 4.50% of 500 =
  5. 5.10% of 70 =
  6. 6.20% of 770 =
  7. 7.25% of 210 =
  8. 8.50% of 40 =
  9. 9.50% of 210 =
  10. 10.25% of 720 =
  11. 11.20% of 740 =
  12. 12.20% of 490 =
  13. 13.25% of 720 =
  14. 14.20% of 130 =
  15. 15.10% of 30 =
  16. 16.1% of 60 =
  17. 17.10% of 800 =
  18. 18.20% of 30 =
  19. 19.50% of 370 =
  20. 20.1% of 180 =
  21. 21.10% of 580 =
  22. 22.5% of 340 =
  23. 23.1% of 290 =
  24. 24.20% of 170 =
  25. 25.25% of 430 =
  26. 26.20% of 390 =
  27. 27.20% of 340 =
  28. 28.25% of 30 =
  29. 29.10% of 340 =
  30. 30.25% of 420 =
  31. 31.50% of 580 =
  32. 32.1% of 370 =
  33. 33.20% of 180 =
  34. 34.20% of 240 =
  35. 35.20% of 360 =
  36. 36.5% of 560 =
  37. 37.5% of 860 =
  38. 38.20% of 740 =
  39. 39.25% of 20 =
  40. 40.50% of 400 =

Answer key

  1. 80
  2. 38
  3. 3.6
  4. 250
  5. 7
  6. 154
  7. 52.5
  8. 20
  9. 105
  10. 180
  11. 148
  12. 98
  13. 180
  14. 26
  15. 3
  16. 0.6
  17. 80
  18. 6
  19. 185
  20. 1.8
  21. 58
  22. 17
  23. 2.9
  24. 34
  25. 107.5
  26. 78
  27. 68
  28. 7.5
  29. 34
  30. 105
  31. 290
  32. 3.7
  33. 36
  34. 48
  35. 72
  36. 28
  37. 43
  38. 148
  39. 5
  40. 200

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