Percent and Proportions Word problem

Front

What is a percent?

Back

A percent is a way of expressing a number as a fraction of 100. It is often used to compare ratios.

Front

How do you find a percentage of a number?

Back

To find a percentage of a number, multiply the number by the percentage (in decimal form). For example, to find 30% of 200, calculate 200 * 0.30 = 60.

Front

What does it mean if 75% of a class is taller than a certain height?

Back

It means that out of every 100 students, 75 students are taller than that height.

Front

If there are 20 students in a class and 75% are taller than 60 inches, how many are shorter than 60 inches?

Back

5 students are shorter than 60 inches.

Front

How do you convert a fraction to a percent?

Back

To convert a fraction to a percent, divide the top number (numerator) by the bottom number (denominator) and then multiply by 100.

Front

What is the formula to calculate the number of correct answers on a test?

Back

The formula is: Correct Answers = Total Questions * (Percentage Correct / 100).

Front

If a student answers 80% of 30 questions correctly, how many questions did they answer correctly?

Back

24 questions.

Front

What does the word 'of' indicate in a percent problem?

Back

The word 'of' indicates the whole amount in a percent problem.

Front

If Ms. Smith ate 30% of 10 cupcakes, how many cupcakes did she eat?

Back

She ate 3 cupcakes.

Front

How do you find 30% of 130 exhibits?

Back

Multiply 130 by 0.30 to find the number of exhibits that contain birds: 130 * 0.30 = 39.