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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 263 · 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 630 =
  2. 2.5% of 690 =
  3. 3.25% of 590 =
  4. 4.25% of 570 =
  5. 5.50% of 380 =
  6. 6.5% of 160 =
  7. 7.15% of 320 =
  8. 8.50% of 380 =
  9. 9.50% of 460 =
  10. 10.20% of 70 =
  11. 11.15% of 580 =
  12. 12.50% of 320 =
  13. 13.50% of 580 =
  14. 14.15% of 870 =
  15. 15.25% of 270 =
  16. 16.1% of 160 =
  17. 17.1% of 640 =
  18. 18.5% of 620 =
  19. 19.20% of 430 =
  20. 20.10% of 860 =
  21. 21.50% of 850 =
  22. 22.50% of 240 =
  23. 23.15% of 100 =
  24. 24.15% of 440 =
  25. 25.10% of 710 =
  26. 26.25% of 80 =
  27. 27.1% of 430 =
  28. 28.20% of 800 =
  29. 29.5% of 420 =
  30. 30.50% of 790 =
  31. 31.10% of 770 =
  32. 32.20% of 860 =
  33. 33.1% of 240 =
  34. 34.50% of 100 =
  35. 35.50% of 130 =
  36. 36.25% of 650 =
  37. 37.1% of 350 =
  38. 38.20% of 170 =
  39. 39.10% of 310 =
  40. 40.5% of 220 =

Answer key

  1. 31.5
  2. 34.5
  3. 147.5
  4. 142.5
  5. 190
  6. 8
  7. 48
  8. 190
  9. 230
  10. 14
  11. 87
  12. 160
  13. 290
  14. 130.5
  15. 67.5
  16. 1.6
  17. 6.4
  18. 31
  19. 86
  20. 86
  21. 425
  22. 120
  23. 15
  24. 66
  25. 71
  26. 20
  27. 4.3
  28. 160
  29. 21
  30. 395
  31. 77
  32. 172
  33. 2.4
  34. 50
  35. 65
  36. 162.5
  37. 3.5
  38. 34
  39. 31
  40. 11

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