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percent means out of 100.

Put the percentage over 100 and multiply it by the number:

10 % of 900 = 10/100 x 900

= 90

That will work for any percentage as what it is doing is effectively finding 1 % of the number (by dividing by 100) and then multiplying that by the required percentage: 10 % = 10 x 1%.

However, when put over 100, the created fraction can be simplified first:

In this case 10 % = 10/100 = 1/10 which means that 10% of anything is 1/10 of it. So to calculate 10% of a number divide it by 10 giving:

10 % of 900 = 1/10 x 900

= 900 ÷ 10

= 90

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Q: How do you do the calculations of 10 percent of 900?
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