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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 793 · 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 90 =
  2. 2.20% of 210 =
  3. 3.1% of 620 =
  4. 4.15% of 290 =
  5. 5.25% of 80 =
  6. 6.20% of 320 =
  7. 7.15% of 200 =
  8. 8.5% of 300 =
  9. 9.20% of 60 =
  10. 10.50% of 30 =
  11. 11.20% of 700 =
  12. 12.5% of 150 =
  13. 13.5% of 720 =
  14. 14.50% of 260 =
  15. 15.10% of 440 =
  16. 16.10% of 750 =
  17. 17.15% of 320 =
  18. 18.5% of 550 =
  19. 19.25% of 640 =
  20. 20.50% of 110 =
  21. 21.10% of 200 =
  22. 22.50% of 620 =
  23. 23.1% of 680 =
  24. 24.1% of 440 =
  25. 25.5% of 490 =
  26. 26.50% of 110 =
  27. 27.50% of 120 =
  28. 28.25% of 900 =
  29. 29.50% of 490 =
  30. 30.20% of 610 =
  31. 31.20% of 570 =
  32. 32.50% of 730 =
  33. 33.1% of 190 =
  34. 34.20% of 840 =
  35. 35.20% of 210 =
  36. 36.5% of 200 =
  37. 37.10% of 180 =
  38. 38.10% of 590 =
  39. 39.25% of 880 =
  40. 40.5% of 170 =

Answer key

  1. 22.5
  2. 42
  3. 6.2
  4. 43.5
  5. 20
  6. 64
  7. 30
  8. 15
  9. 12
  10. 15
  11. 140
  12. 7.5
  13. 36
  14. 130
  15. 44
  16. 75
  17. 48
  18. 27.5
  19. 160
  20. 55
  21. 20
  22. 310
  23. 6.8
  24. 4.4
  25. 24.5
  26. 55
  27. 60
  28. 225
  29. 245
  30. 122
  31. 114
  32. 365
  33. 1.9
  34. 168
  35. 42
  36. 10
  37. 18
  38. 59
  39. 220
  40. 8.5

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