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Percentage Worksheet – Mental Maths

Speed calculation lesson 12: Percentages in seconds · Set 360 · 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. 1.10% of 360 =
  2. 2.10% of 340 =
  3. 3.1% of 560 =
  4. 4.50% of 330 =
  5. 5.20% of 760 =
  6. 6.50% of 900 =
  7. 7.20% of 310 =
  8. 8.50% of 550 =
  9. 9.25% of 800 =
  10. 10.20% of 110 =
  11. 11.5% of 490 =
  12. 12.10% of 490 =
  13. 13.25% of 680 =
  14. 14.10% of 740 =
  15. 15.25% of 760 =
  16. 16.10% of 670 =
  17. 17.20% of 880 =
  18. 18.5% of 70 =
  19. 19.15% of 290 =
  20. 20.10% of 430 =
  21. 21.5% of 650 =
  22. 22.25% of 540 =
  23. 23.10% of 670 =
  24. 24.5% of 340 =
  25. 25.10% of 180 =
  26. 26.50% of 760 =
  27. 27.5% of 450 =
  28. 28.15% of 760 =
  29. 29.20% of 550 =
  30. 30.25% of 130 =
  31. 31.1% of 110 =
  32. 32.1% of 330 =
  33. 33.1% of 280 =
  34. 34.10% of 620 =
  35. 35.5% of 230 =
  36. 36.20% of 610 =
  37. 37.50% of 430 =
  38. 38.15% of 260 =
  39. 39.10% of 630 =
  40. 40.10% of 820 =

Answer key

  1. 36
  2. 34
  3. 5.6
  4. 165
  5. 152
  6. 450
  7. 62
  8. 275
  9. 200
  10. 22
  11. 24.5
  12. 49
  13. 170
  14. 74
  15. 190
  16. 67
  17. 176
  18. 3.5
  19. 43.5
  20. 43
  21. 32.5
  22. 135
  23. 67
  24. 17
  25. 18
  26. 380
  27. 22.5
  28. 114
  29. 110
  30. 32.5
  31. 1.1
  32. 3.3
  33. 2.8
  34. 62
  35. 11.5
  36. 122
  37. 215
  38. 39
  39. 63
  40. 82

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