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 write a ratio?

Back

Ratios can be written in three ways: as a fraction (a/b), with a colon (a:b), or with the word 'to' (a to b).

Front

What is a proportion?

Back

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

Front

How do you determine if two ratios are proportional?

Back

Two ratios are proportional if their cross products are equal.

Front

What is the unit rate?

Back

The unit rate is a ratio that compares a quantity to one unit of another quantity, often expressed as 'per'.

Front

If 2 cups of sugar are needed for 3 lemons, how many lemons are needed for 6 cups of sugar?

Back

9 lemons.

Front

What is the ratio of triangles to squares if there are 4 triangles and 3 squares?

Back

The ratio is 4:3.

Front

Are the ratios 4/5 and 15/20 proportional?

Back

No, they are not proportional.

Front

What is the ratio of red marbles to yellow marbles if there are 2 red and 5 yellow?

Back

The ratio is 2 to 5.

Front

Find the unit rate of 30 cm of snow in 6 hours.

Back

5 cm of snow per hour.