Ratios and Rates Review

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify a ratio?

Back

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

Front

What is the ratio of flour and butter to sugar in the recipe: 2 cups of sugar, 3 cups of flour, 1 cup of butter?

Back

The ratio of flour and butter to sugar is 2:1.

Front

If a pipe fills a bucket in 30 minutes, how long will it take to fill 6 buckets?

Back

It will take 3 hours to fill 6 buckets.

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two quantities with different units, such as speed (miles per hour).

Front

How do you convert a rate into a unit rate?

Back

To convert a rate into a unit rate, divide both quantities by the denominator to find the value per one unit of the second quantity.

Front

What is the unit rate of 20 items for $7.99?

Back

The unit rate is approximately $0.40 per item.

Front

What is the formula for calculating a ratio?

Back

The formula for calculating a ratio is: Ratio = Quantity A : Quantity B.

Front

How can ratios be expressed?

Back

Ratios can be expressed in three ways: as a fraction, with a colon (e.g., 2:1), or with the word 'to' (e.g., 2 to 1).

Front

What is the relationship between ratios and proportions?

Back

A proportion states that two ratios are equal, often written as a/b = c/d.