Ratios and Proportions Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a:b'.

Front

How do you simplify a ratio?

Back

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

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Front

How can you find an unknown in a proportion?

Back

You can find an unknown in a proportion by cross-multiplying and solving for the variable.

Front

What is the cost per item?

Back

The cost per item is calculated by dividing the total cost by the number of items.

Front

If 7 prints cost $1.40, what is the cost of 1 print?

Back

The cost of 1 print is $1.40 ÷ 7 = $0.20.

Front

What is the ratio of cupcakes to cookies if 10 cupcakes and 20 cookies are sold?

Back

The ratio is 10:20, which simplifies to 1:2.

Front

How do you set up a proportion to solve a problem?

Back

Set up a proportion by creating a fraction for each ratio and setting them equal to each other.

Front

If x is 20 and y is 60 in a table, what is the relationship between x and y?

Back

The relationship can be expressed as a ratio or a function, depending on the context.

Front

How do you calculate the total cost for multiple items?

Back

Multiply the cost per item by the number of items.