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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 26 · 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. 1.10% of 240 =
  2. 2.5% of 760 =
  3. 3.10% of 220 =
  4. 4.50% of 120 =
  5. 5.25% of 500 =
  6. 6.15% of 170 =
  7. 7.20% of 380 =
  8. 8.20% of 280 =
  9. 9.5% of 160 =
  10. 10.5% of 250 =
  11. 11.20% of 460 =
  12. 12.10% of 580 =
  13. 13.5% of 570 =
  14. 14.20% of 640 =
  15. 15.1% of 620 =
  16. 16.1% of 250 =
  17. 17.10% of 110 =
  18. 18.1% of 720 =
  19. 19.5% of 130 =
  20. 20.10% of 630 =
  21. 21.25% of 430 =
  22. 22.1% of 200 =
  23. 23.15% of 630 =
  24. 24.15% of 140 =
  25. 25.5% of 840 =
  26. 26.15% of 30 =
  27. 27.1% of 340 =
  28. 28.1% of 380 =
  29. 29.50% of 260 =
  30. 30.20% of 740 =
  31. 31.15% of 350 =
  32. 32.20% of 760 =
  33. 33.1% of 700 =
  34. 34.1% of 410 =
  35. 35.20% of 480 =
  36. 36.50% of 840 =
  37. 37.1% of 480 =
  38. 38.20% of 30 =
  39. 39.10% of 360 =
  40. 40.5% of 540 =

Answer key

  1. 24
  2. 38
  3. 22
  4. 60
  5. 125
  6. 25.5
  7. 76
  8. 56
  9. 8
  10. 12.5
  11. 92
  12. 58
  13. 28.5
  14. 128
  15. 6.2
  16. 2.5
  17. 11
  18. 7.2
  19. 6.5
  20. 63
  21. 107.5
  22. 2
  23. 94.5
  24. 21
  25. 42
  26. 4.5
  27. 3.4
  28. 3.8
  29. 130
  30. 148
  31. 52.5
  32. 152
  33. 7
  34. 4.1
  35. 96
  36. 420
  37. 4.8
  38. 6
  39. 36
  40. 27

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