Unit 3 Review - Rates, Ratios, Percents

Front

What is a rate?

Back

A rate is a ratio that compares two different kinds of quantities, often expressed as a fraction. For example, speed is a rate that compares distance to time.

Front

What is a ratio?

Back

A ratio is a comparison of two quantities by division. It can be expressed in different forms, such as a fraction, a colon (e.g., 3:2), or with the word 'to' (e.g., 3 to 2).

Front

How do you calculate a percent?

Back

To calculate a percent, divide the part by the whole and then multiply by 100. For example, to find what percent 25 is of 200, calculate (25/200) * 100 = 12.5%.

Front

If Vanessa made $9.50 per hour, how much would she earn if she worked 40 hours?

Back

$380

Front

In the school cafeteria, if 3 out of every 5 students buy a sandwich, what is the ratio of students that buy a sandwich to those that do not?

Back

3:2

Front

What is the formula to find the total amount when given a percent?

Back

Total Amount = (Percent / 100) * Whole.

Front

Which number is closest to 55% of 300?

Back

150

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, where the first quantity is the numerator and the second quantity is the denominator.

Front

If there are 12 red marbles in a bag and the ratio of total marbles to red marbles is 5:2, how many marbles are in the bag?

Back

30

Front

What is a double number line?

Back

A double number line is a visual tool that shows two sets of numbers along parallel lines, helping to illustrate relationships between quantities.