The idea
Percent means out of one hundred. A percentage can be written as a fraction with denominator one hundred or as a decimal. To find that percentage of an amount, multiply the amount by the corresponding fraction or decimal.
Before you begin: Understand simple fractions and multiply or divide whole numbers.
Find twenty-five percent of eighty.
Rewrite the percentage as a fraction and simplify. Twenty-five out of one hundred is one quarter.
One quarter of eighty is found by dividing eighty into four equal groups.
Multiplying by the equivalent decimal gives the same answer.
A mistake to avoid
Twenty-five percent is 0.25, not 25. Always identify the whole amount before finding its percentage.
Your turn.
Find ten percent first, then double it.
Show the solution
Ten percent is one tenth. Twenty percent is twice that amount.