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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 686 · 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 320 =
  2. 2.5% of 450 =
  3. 3.20% of 270 =
  4. 4.50% of 850 =
  5. 5.20% of 650 =
  6. 6.20% of 530 =
  7. 7.1% of 40 =
  8. 8.20% of 820 =
  9. 9.15% of 400 =
  10. 10.25% of 650 =
  11. 11.25% of 700 =
  12. 12.5% of 220 =
  13. 13.25% of 850 =
  14. 14.1% of 400 =
  15. 15.5% of 520 =
  16. 16.5% of 200 =
  17. 17.5% of 20 =
  18. 18.5% of 280 =
  19. 19.15% of 410 =
  20. 20.20% of 840 =
  21. 21.15% of 730 =
  22. 22.20% of 50 =
  23. 23.25% of 70 =
  24. 24.10% of 630 =
  25. 25.20% of 90 =
  26. 26.5% of 290 =
  27. 27.15% of 630 =
  28. 28.5% of 260 =
  29. 29.25% of 830 =
  30. 30.10% of 80 =
  31. 31.15% of 650 =
  32. 32.1% of 530 =
  33. 33.10% of 610 =
  34. 34.1% of 730 =
  35. 35.25% of 400 =
  36. 36.50% of 210 =
  37. 37.25% of 140 =
  38. 38.10% of 140 =
  39. 39.5% of 60 =
  40. 40.25% of 210 =

Answer key

  1. 32
  2. 22.5
  3. 54
  4. 425
  5. 130
  6. 106
  7. 0.4
  8. 164
  9. 60
  10. 162.5
  11. 175
  12. 11
  13. 212.5
  14. 4
  15. 26
  16. 10
  17. 1
  18. 14
  19. 61.5
  20. 168
  21. 109.5
  22. 10
  23. 17.5
  24. 63
  25. 18
  26. 14.5
  27. 94.5
  28. 13
  29. 207.5
  30. 8
  31. 97.5
  32. 5.3
  33. 61
  34. 7.3
  35. 100
  36. 105
  37. 35
  38. 14
  39. 3
  40. 52.5

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