To find 10% of any number, you can simply multiply that number by 0.10. In this case, to determine 10% of 90, you would perform the following calculation:
Calculation:
10% of 90 = 90 x 0.10
Now, let’s perform the multiplication:
90 x 0.10 = 9
Therefore, 10% of 90 equals 9.
This method can be applied to any number to find its percentage. Just remember to convert the percentage into a decimal form (by dividing by 100) before multiplying.