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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 38 · 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 200 =
  2. 2.5% of 500 =
  3. 3.15% of 210 =
  4. 4.5% of 420 =
  5. 5.10% of 40 =
  6. 6.5% of 760 =
  7. 7.5% of 260 =
  8. 8.5% of 290 =
  9. 9.10% of 260 =
  10. 10.25% of 830 =
  11. 11.1% of 340 =
  12. 12.20% of 780 =
  13. 13.5% of 40 =
  14. 14.10% of 130 =
  15. 15.15% of 60 =
  16. 16.50% of 590 =
  17. 17.20% of 30 =
  18. 18.1% of 850 =
  19. 19.5% of 270 =
  20. 20.10% of 290 =
  21. 21.10% of 790 =
  22. 22.20% of 740 =
  23. 23.50% of 90 =
  24. 24.1% of 890 =
  25. 25.25% of 270 =
  26. 26.5% of 210 =
  27. 27.25% of 840 =
  28. 28.20% of 250 =
  29. 29.20% of 860 =
  30. 30.20% of 110 =
  31. 31.1% of 880 =
  32. 32.20% of 630 =
  33. 33.20% of 410 =
  34. 34.50% of 180 =
  35. 35.50% of 860 =
  36. 36.10% of 110 =
  37. 37.10% of 550 =
  38. 38.15% of 560 =
  39. 39.1% of 550 =
  40. 40.50% of 510 =

Answer key

  1. 20
  2. 25
  3. 31.5
  4. 21
  5. 4
  6. 38
  7. 13
  8. 14.5
  9. 26
  10. 207.5
  11. 3.4
  12. 156
  13. 2
  14. 13
  15. 9
  16. 295
  17. 6
  18. 8.5
  19. 13.5
  20. 29
  21. 79
  22. 148
  23. 45
  24. 8.9
  25. 67.5
  26. 10.5
  27. 210
  28. 50
  29. 172
  30. 22
  31. 8.8
  32. 126
  33. 82
  34. 90
  35. 430
  36. 11
  37. 55
  38. 84
  39. 5.5
  40. 255

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