Ratios and Rates Test

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Front

How do you write a ratio?

Back

A ratio can be written using the word 'to' or with a colon (:). For example, the ratio of 2 apples to 3 oranges can be written as 2 to 3 or 2:3.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as miles per hour or price per item.

Front

How do you find the price per item?

Back

To find the price per item, divide the total cost by the number of items. For example, if 4 tickets cost $252, the price per ticket is $252 ÷ 4 = $63.

Front

Which is a better buy: 12 cans for $3.50 or 6 cans for $1.80?

Back

The better buy is the 12 cans for $3.50 because the cost per can is lower.

Front

What is the ratio of squares to circles if there are 12 squares and 6 circles?

Back

The ratio of squares to circles is 12:6, which simplifies to 2:1.

Front

If an 8 pack of juice boxes costs $4.79, what is the cost per juice box?

Back

The cost per juice box is $4.79 ÷ 8 = $0.598, or about 60 cents.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, even if the numbers are different.

Front

How can you compare two rates?

Back

To compare two rates, convert them to the same unit or find a common denominator.

Front

What is the formula for calculating a unit rate?

Back

The formula for calculating a unit rate is: Unit Rate = Total Quantity ÷ Number of Units.