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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 220 · 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. 1.1% of 250 =
  2. 2.10% of 50 =
  3. 3.25% of 120 =
  4. 4.5% of 130 =
  5. 5.5% of 220 =
  6. 6.5% of 270 =
  7. 7.5% of 730 =
  8. 8.50% of 70 =
  9. 9.50% of 680 =
  10. 10.25% of 660 =
  11. 11.1% of 190 =
  12. 12.1% of 110 =
  13. 13.20% of 260 =
  14. 14.10% of 610 =
  15. 15.25% of 100 =
  16. 16.5% of 460 =
  17. 17.15% of 40 =
  18. 18.5% of 700 =
  19. 19.10% of 610 =
  20. 20.1% of 20 =
  21. 21.10% of 520 =
  22. 22.25% of 630 =
  23. 23.5% of 270 =
  24. 24.1% of 220 =
  25. 25.20% of 640 =
  26. 26.10% of 420 =
  27. 27.10% of 200 =
  28. 28.20% of 500 =
  29. 29.50% of 570 =
  30. 30.5% of 390 =
  31. 31.1% of 350 =
  32. 32.15% of 40 =
  33. 33.50% of 700 =
  34. 34.20% of 140 =
  35. 35.20% of 40 =
  36. 36.20% of 30 =
  37. 37.50% of 700 =
  38. 38.1% of 590 =
  39. 39.5% of 530 =
  40. 40.15% of 120 =

Answer key

  1. 2.5
  2. 5
  3. 30
  4. 6.5
  5. 11
  6. 13.5
  7. 36.5
  8. 35
  9. 340
  10. 165
  11. 1.9
  12. 1.1
  13. 52
  14. 61
  15. 25
  16. 23
  17. 6
  18. 35
  19. 61
  20. 0.2
  21. 52
  22. 157.5
  23. 13.5
  24. 2.2
  25. 128
  26. 42
  27. 20
  28. 100
  29. 285
  30. 19.5
  31. 3.5
  32. 6
  33. 350
  34. 28
  35. 8
  36. 6
  37. 350
  38. 5.9
  39. 26.5
  40. 18

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