Ratios/Ratio Tables

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

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

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the ratio of red marbles to yellow marbles if there are 2 red and 5 yellow?

Back

The ratio of red to yellow marbles is 2:5.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If a bag contains 3 blue marbles, 2 red marbles, and 5 yellow marbles, what is the ratio of blue to total marbles?

Back

The total number of marbles is 10, so the ratio of blue to total marbles is 3:10.

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

Complete the ratio table: 2:3, 4:6, __:9.

Back

The missing ratio is 6:9.

Front

If Patrick has 2 black, 3 red, and 5 white toy cars, what is the ratio of black to red toy cars?

Back

The ratio of black to red toy cars is 2:3.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is the ratio of red toy cars to all toy cars if there are 10 toy cars in total?

Back

The ratio of red toy cars to all toy cars is 3:10.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor (GCD).

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

If the ratio of cats to dogs is 4:5, how many cats are there if there are 20 dogs?

Back

If there are 20 dogs, then there are 16 cats (4/5 = x/20, so x = 16).