Ratios and Proportions

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

How do you write a ratio?

Back

Ratios can be written in three ways: using a colon (e.g., 2:5), as a fraction (e.g., 2/5), or with the word 'to' (e.g., 2 to 5).

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

Front

What is the unit rate?

Back

The unit rate is a comparison of a quantity to one unit of another quantity, often expressed as 'per' something (e.g., miles per hour).

Front

How do you find the unit rate from a total cost?

Back

Front

What is the ratio of apples to oranges if Nora has 2 apples and Samuel has 5 oranges?

Back

The ratio of apples to oranges is 2:5.

Front

If Anika needs 12 cups of flour for 60 cookies, how much flour does she need for 3 cookies?

Back

Front

What is the ratio of strawberries to the total number of fruits if Emma has 20 strawberries and 35 grapes?

Back

The ratio of strawberries to the total number of fruits is 20:55.

Front

What is the comparison called when Priya and Anika compare the number of apples they have?

Back

This comparison is called a comparison of two units.