Ratios and Rates

Front

What is a Ratio?

Back

A ratio is a comparison of two quantities, showing the relative size of one quantity to another.

Front

How do you write a ratio?

Back

A ratio can be written in three ways: using a colon (e.g., 5:7), as a fraction (e.g., 5/7), or with the word 'to' (e.g., 5 to 7).

Front

What is the ratio of Ella's balloons to Taylor's balloons if Ella has 5 and Taylor has 7?

Back

The ratio of Ella's balloons to Taylor's balloons is 5:7.

Front

If there are 88 students in 4 classes, how many students are there per class?

Back

There are 22 students per class (88 students ÷ 4 classes = 22 students/class).

Front

What is the ratio of oatmeal cookies to chocolate chip cookies if there are 5 oatmeal and 6 chocolate chip cookies?

Back

The ratio of oatmeal cookies to chocolate chip cookies is 5:6.

Front

What does it mean to solve a proportion?

Back

Solving a proportion means finding the value of a variable that makes two ratios equal.

Front

If n is the unknown in the proportion 4/5 = n/10, what is the value of n?

Back

The value of n is 8.

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) or price per item.

Front

How do you convert a ratio to a percentage?

Back

To convert a ratio to a percentage, divide the first quantity by the second quantity and multiply by 100.

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, and they represent the same relationship between quantities.