Percent Word Problems

A percent is a ratio expressed as a fraction of 100. It represents a part of a whole.

To calculate the percentage of a number, multiply the number by the percentage (in decimal form) and then divide by 100.

Part = (Percent / 100) * Whole.

Multiply 30 by 0.80 (80% in decimal) to get 24 correct answers.

Divide the part by the whole and multiply by 100. (Percent = (Part / Whole) * 100).

The percent proportion is a way to express the relationship between part, whole, and percent: Part/Whole = Percent/100.

Divide 12 by 30 and multiply by 100 to get 40%.

Finding 25% of a number means to calculate one-fourth of that number.

If the decimal is 0.5 or higher, round up. If it's less than 0.5, round down.

Multiply $20 by 0.30 to find that she spent $6.