Percent Proportions

Front

What is a percent?

Back

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

Front

How do you calculate what percent one number is of another?

Back

To find what percent A is of B, divide A by B and then multiply by 100. Formula: (A/B) * 100.

Front

What is the formula to find the part when given the percent and the whole?

Back

To find the part, use the formula: Part = (Percent/100) * Whole.

Front

If 25% of a number is 50, what is the number?

Back

The number is 200. (50 / 0.25 = 200)

Front

What does it mean if 80% of a class passed a test?

Back

It means that 80 out of every 100 students in the class scored above the passing mark.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the numerator by the denominator and multiply by 100.

Front

What is the percent increase if a price goes from $50 to $75?

Back

The percent increase is 50%. ((75-50)/50) * 100 = 50%.

Front

If 60% of a class of 30 students are girls, how many girls are in the class?

Back

There are 18 girls in the class. (0.60 * 30 = 18)

Front

What is the relationship between percent, fraction, and decimal?

Back

Percent is a fraction with a denominator of 100, and it can also be expressed as a decimal by dividing by 100.

Front

How do you find the total when given a part and its percent?

Back

Use the formula: Total = Part / (Percent/100).