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.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you write a ratio?

Back

Ratios can be written in three ways: as a fraction (e.g., 1/2), with a colon (e.g., 1:2), or with the word 'to' (e.g., 1 to 2).

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.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, set up a proportion using the known values and solve for the unknown.

Front

What is a proportion?

Back

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

Tags

CCSS.7.RP.A.2A

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the variable.

Tags

CCSS.7.RP.A.2C

Front

Back

x = 35.

Tags

CCSS.7.RP.A.2C

Front

What is the relationship between ratios and fractions?

Back

Ratios can be expressed as fractions, and they represent the same relationship between quantities.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If Julie's ratio of water to sugar is 4:2 and Annie's is 10:4, who has more sugar per unit of water?

Back

Annie has more sugar per unit of water.

Tags

CCSS.6.RP.A.3A

Front

How do you scale a ratio?

Back

To scale a ratio, multiply or divide both parts of the ratio by the same number.

Tags

CCSS.6.RP.A.3A