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

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 solve a proportion?

Back

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

Tags

CCSS.7.RP.A.2C

Front

What does it mean for two ratios to be equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities, meaning they simplify to the same fraction.

Tags

CCSS.6.RP.A.3A

Front

Back

The cross-multiplication rule states that a*d = b*c.

Tags

CCSS.5.NF.B.5B

Front

What is the missing value in the ratio table if the ratio is 2:5 and the first value is 6?

Back

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

Back

Cross-multiply to get 6 * 20 = 24 * x.

Tags

CCSS.7.RP.A.3

Front

Back

The solution is x = 35.

Tags

CCSS.7.RP.A.2C