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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 556 · 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. 1.25% of 560 =
  2. 2.1% of 190 =
  3. 3.10% of 600 =
  4. 4.1% of 130 =
  5. 5.20% of 520 =
  6. 6.1% of 260 =
  7. 7.15% of 500 =
  8. 8.50% of 300 =
  9. 9.10% of 700 =
  10. 10.5% of 290 =
  11. 11.50% of 750 =
  12. 12.50% of 570 =
  13. 13.50% of 740 =
  14. 14.5% of 580 =
  15. 15.25% of 310 =
  16. 16.25% of 780 =
  17. 17.1% of 320 =
  18. 18.50% of 560 =
  19. 19.10% of 70 =
  20. 20.1% of 240 =
  21. 21.50% of 80 =
  22. 22.20% of 750 =
  23. 23.10% of 360 =
  24. 24.25% of 170 =
  25. 25.5% of 790 =
  26. 26.25% of 250 =
  27. 27.20% of 270 =
  28. 28.20% of 220 =
  29. 29.15% of 220 =
  30. 30.20% of 100 =
  31. 31.15% of 590 =
  32. 32.10% of 200 =
  33. 33.10% of 680 =
  34. 34.15% of 540 =
  35. 35.15% of 230 =
  36. 36.20% of 860 =
  37. 37.20% of 650 =
  38. 38.20% of 630 =
  39. 39.15% of 150 =
  40. 40.10% of 520 =

Answer key

  1. 140
  2. 1.9
  3. 60
  4. 1.3
  5. 104
  6. 2.6
  7. 75
  8. 150
  9. 70
  10. 14.5
  11. 375
  12. 285
  13. 370
  14. 29
  15. 77.5
  16. 195
  17. 3.2
  18. 280
  19. 7
  20. 2.4
  21. 40
  22. 150
  23. 36
  24. 42.5
  25. 39.5
  26. 62.5
  27. 54
  28. 44
  29. 33
  30. 20
  31. 88.5
  32. 20
  33. 68
  34. 81
  35. 34.5
  36. 172
  37. 130
  38. 126
  39. 22.5
  40. 52

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