Ratios & Ratio Tables

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 (1/2), with a colon (1:2), or with the word 'to' (1 to 2).

Front

What is a ratio table?

Back

A ratio table is a table that displays pairs of numbers that form equivalent ratios.

Front

How do you find a missing value in a ratio table?

Back

To find a missing value, use equivalent ratios to set up a proportion and solve for the unknown.

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 then solve for the unknown variable.

Front

If 3/4 = x/16, what is x?

Back

x = 12.

Front

What is the value of B in the ratio table if A = 28 and the ratio is 2:5?

Back

B = 70.

Front

If the ratio of cats to dogs is 3:4 and there are 12 cats, how many dogs are there?

Back

There are 16 dogs.

Front

What is the missing value if the ratio is 5:3 and the known value is 15?

Back

The missing value is 9.