Ratio and Rates

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'x per 1 unit'.

Front

How do you find the unit rate from a given distance and time?

Back

To find the unit rate, divide the total distance by the total time to get the distance per unit of time.

Front

What is the ratio of school apps to game apps if Kelly has 5 school apps and 3 game apps?

Back

The ratio of school apps to game apps is 5:3.

Front

If there are 20 apples in the fridge and 9 on the table, what is the ratio of apples in the fridge to apples on the table?

Back

The ratio of apples in the fridge to apples on the table is 20:9.

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they can be simplified to the same fraction.

Front

How do you determine what number to fill in to make ratios equivalent?

Back

To find the missing number, set up a proportion and solve for the unknown value.

Front

What is the process to simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Front

If a ratio is 2:5, what is the equivalent ratio if both terms are multiplied by 4?

Back

The equivalent ratio is 8:20.

Front

What is the formula for calculating a rate?

Back

Rate = Quantity / Time.