Ratio & Proportions

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: using a colon (e.g., 3:2), as a fraction (e.g., 3/2), or with the word 'to' (e.g., 3 to 2).

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

To solve a proportion, cross-multiply the terms and set the products equal to each other.

Front

What is the ratio of bananas to apples if there are 5 bananas and 3 apples?

Back

5:3

Front

If there are 13 male teachers and 5 female teachers, what is the ratio of female teachers to male teachers?

Back

5:13

Front

What is the ratio of circles to squares if there are 2 circles and 1 square?

Back

2:1

Front

Give a real-life example of a ratio.

Back

4 meatballs : 1 cup of sauce.

Front

If I paid $15.00 for 6 gallons of gasoline, what was the price per gallon?

Back

$2.50

Front

What is the first step in simplifying a ratio?

Back

Find the greatest common factor (GCF) of the two numbers.