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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 182 · 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. 1.50% of 530 =
  2. 2.15% of 800 =
  3. 3.20% of 180 =
  4. 4.50% of 550 =
  5. 5.50% of 470 =
  6. 6.15% of 680 =
  7. 7.1% of 750 =
  8. 8.5% of 770 =
  9. 9.20% of 880 =
  10. 10.20% of 380 =
  11. 11.25% of 410 =
  12. 12.20% of 410 =
  13. 13.15% of 190 =
  14. 14.20% of 50 =
  15. 15.20% of 370 =
  16. 16.1% of 650 =
  17. 17.50% of 440 =
  18. 18.25% of 390 =
  19. 19.10% of 330 =
  20. 20.1% of 700 =
  21. 21.10% of 320 =
  22. 22.1% of 160 =
  23. 23.20% of 530 =
  24. 24.10% of 490 =
  25. 25.10% of 160 =
  26. 26.5% of 440 =
  27. 27.15% of 770 =
  28. 28.15% of 60 =
  29. 29.1% of 540 =
  30. 30.25% of 90 =
  31. 31.15% of 280 =
  32. 32.10% of 500 =
  33. 33.50% of 780 =
  34. 34.20% of 440 =
  35. 35.50% of 270 =
  36. 36.10% of 450 =
  37. 37.50% of 110 =
  38. 38.15% of 800 =
  39. 39.50% of 410 =
  40. 40.20% of 30 =

Answer key

  1. 265
  2. 120
  3. 36
  4. 275
  5. 235
  6. 102
  7. 7.5
  8. 38.5
  9. 176
  10. 76
  11. 102.5
  12. 82
  13. 28.5
  14. 10
  15. 74
  16. 6.5
  17. 220
  18. 97.5
  19. 33
  20. 7
  21. 32
  22. 1.6
  23. 106
  24. 49
  25. 16
  26. 22
  27. 115.5
  28. 9
  29. 5.4
  30. 22.5
  31. 42
  32. 50
  33. 390
  34. 88
  35. 135
  36. 45
  37. 55
  38. 120
  39. 205
  40. 6

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