Ratios & Unit Rates, Multiplying and Dividing Fract Review

Front

What is a ratio?

Back

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

Front

How do you calculate a unit rate?

Back

To calculate a unit rate, divide the quantity by the number of units. For example, if 4 apples cost $2, the unit rate is $2/4 apples = $0.50 per apple.

Front

What is the formula for finding the cost per item?

Back

Cost per item = Total cost / Number of items.

Front

If a recipe requires 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

How do you find the total number of items based on a ratio?

Back

To find the total number of items based on a ratio, add the parts of the ratio together and then use that sum to find the total quantity.

Front

What is a unit rate in the context of speed?

Back

A unit rate in the context of speed is the distance traveled per unit of time, such as miles per hour or miles per minute.

Front

If Zuri’s speed is 0.2 miles per minute, how long will it take her to travel 5 miles?

Back

It will take Zuri 25 minutes to travel 5 miles.

Front

How do you convert a fraction to a decimal?

Back

To convert a fraction to a decimal, divide the numerator by the denominator.

Front

What is the cost per apple if 7 apples cost $4.55?

Back

The cost per apple is $0.65.

Front

If the ratio of cats to dogs is 5:2 and there are 45 cats, how many dogs are there?

Back

There are 18 dogs.