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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 561 · 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. 1.5% of 190 =
  2. 2.10% of 840 =
  3. 3.50% of 300 =
  4. 4.10% of 390 =
  5. 5.50% of 530 =
  6. 6.10% of 240 =
  7. 7.5% of 440 =
  8. 8.10% of 670 =
  9. 9.50% of 110 =
  10. 10.1% of 340 =
  11. 11.10% of 620 =
  12. 12.1% of 810 =
  13. 13.15% of 190 =
  14. 14.1% of 620 =
  15. 15.20% of 170 =
  16. 16.15% of 610 =
  17. 17.15% of 900 =
  18. 18.20% of 510 =
  19. 19.50% of 230 =
  20. 20.10% of 250 =
  21. 21.50% of 800 =
  22. 22.15% of 430 =
  23. 23.50% of 830 =
  24. 24.1% of 280 =
  25. 25.10% of 440 =
  26. 26.25% of 60 =
  27. 27.15% of 160 =
  28. 28.15% of 30 =
  29. 29.20% of 310 =
  30. 30.10% of 680 =
  31. 31.5% of 360 =
  32. 32.20% of 680 =
  33. 33.25% of 320 =
  34. 34.20% of 260 =
  35. 35.20% of 120 =
  36. 36.5% of 190 =
  37. 37.10% of 680 =
  38. 38.5% of 290 =
  39. 39.1% of 680 =
  40. 40.25% of 650 =

Answer key

  1. 9.5
  2. 84
  3. 150
  4. 39
  5. 265
  6. 24
  7. 22
  8. 67
  9. 55
  10. 3.4
  11. 62
  12. 8.1
  13. 28.5
  14. 6.2
  15. 34
  16. 91.5
  17. 135
  18. 102
  19. 115
  20. 25
  21. 400
  22. 64.5
  23. 415
  24. 2.8
  25. 44
  26. 15
  27. 24
  28. 4.5
  29. 62
  30. 68
  31. 18
  32. 136
  33. 80
  34. 52
  35. 24
  36. 9.5
  37. 68
  38. 14.5
  39. 6.8
  40. 162.5

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