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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 493 · 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 130 =
  2. 2.5% of 900 =
  3. 3.50% of 430 =
  4. 4.15% of 190 =
  5. 5.15% of 50 =
  6. 6.25% of 620 =
  7. 7.50% of 600 =
  8. 8.10% of 810 =
  9. 9.1% of 300 =
  10. 10.15% of 550 =
  11. 11.20% of 470 =
  12. 12.1% of 640 =
  13. 13.10% of 240 =
  14. 14.20% of 550 =
  15. 15.20% of 480 =
  16. 16.1% of 750 =
  17. 17.15% of 140 =
  18. 18.15% of 240 =
  19. 19.5% of 650 =
  20. 20.5% of 670 =
  21. 21.20% of 560 =
  22. 22.5% of 320 =
  23. 23.15% of 580 =
  24. 24.20% of 500 =
  25. 25.20% of 220 =
  26. 26.25% of 410 =
  27. 27.5% of 700 =
  28. 28.15% of 390 =
  29. 29.5% of 610 =
  30. 30.10% of 740 =
  31. 31.50% of 120 =
  32. 32.25% of 380 =
  33. 33.50% of 60 =
  34. 34.20% of 300 =
  35. 35.25% of 490 =
  36. 36.20% of 840 =
  37. 37.1% of 140 =
  38. 38.10% of 430 =
  39. 39.1% of 270 =
  40. 40.10% of 760 =

Answer key

  1. 26
  2. 45
  3. 215
  4. 28.5
  5. 7.5
  6. 155
  7. 300
  8. 81
  9. 3
  10. 82.5
  11. 94
  12. 6.4
  13. 24
  14. 110
  15. 96
  16. 7.5
  17. 21
  18. 36
  19. 32.5
  20. 33.5
  21. 112
  22. 16
  23. 87
  24. 100
  25. 44
  26. 102.5
  27. 35
  28. 58.5
  29. 30.5
  30. 74
  31. 60
  32. 95
  33. 30
  34. 60
  35. 122.5
  36. 168
  37. 1.4
  38. 43
  39. 2.7
  40. 76

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