Unit 5: Ratios, Rates, and Proportions Review

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

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units.

Front

What does it mean for a relationship to be proportional?

Back

A relationship is proportional if two quantities maintain a constant ratio or rate.

Front

How can you determine if a table of values is proportional?

Back

A table is proportional if the ratio of the values in one column to the values in another column is constant.

Front

If Sophie types 128 words in 3 minutes, how many words does she type per minute?

Back

Sophie types approximately 42.67 words per minute.

Front

If Eric bought 4 pairs of socks for $9, what is the cost per pair?

Back

The cost per pair of socks is $2.25.

Front

How do you find the total cost when given a unit price?

Back

Multiply the unit price by the number of units purchased.

Front

What is the formula for finding a missing value in a proportion?

Back

If a/b = c/d, then ad = bc.

Front

What is the difference between a part-to-part ratio and a part-to-whole ratio?

Back

A part-to-part ratio compares two parts of a whole, while a part-to-whole ratio compares one part to the entire whole.

Front

If a recipe calls for 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.