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What is 10% of 500?

10% of 500 is 50. Adding it gives 550; taking it off gives 450.

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The numbers for these inputs

PercentOf the numberNumber plus itNumber minus it
5%25525475
10%50550450
15%75575425
20%100600400
25%125625375
30%150650350
40%200700300
50%250750250

How it works

A percent is a part of 100, so X percent of a number is the number x X / 100. For 15 percent of 80: 80 x 15 / 100 = 12.

To add a percent (a price rise, a tip, a tax), multiply by 1 + X/100. To take it off (a discount), multiply by 1 - X/100.

The table shows the same number at common percentages so you can compare at a glance.

Common mistakes

  • Adding a percent and then taking the same percent off: +20% then -20% does not return to the start, it leaves you 4% lower.
  • Mixing up percent and percentage points: going from 10% to 12% is 2 points, but a 20% increase.
  • Taking a percent of the wrong base, for example a discount of the final price instead of the original.

Questions

What is 10 percent of 500?

50. It is 500 x 10 / 100.

What is 500 plus 10 percent?

550.

What is 500 minus 10 percent?

450, for example a 10% discount on a price of 500.

50 is what percent of 500?

10%. Divide the part by the whole and multiply by 100.

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