Ratio

Ratio

Introduction to Ratio

Learning Objectives:

• Define the term a Ratio.

• Write a Ratio as a fraction.

• Write a ratio in its simplest form.

• Divide a quantity in a given ratio.

Multiple Choice

Which sentence accurately represents the following ratio:

• The ratio of moons to suns is 4 to 8

• There are 4 moons for every 8 suns

• There are 10 moons for every 2 suns

• The ratio of suns to moons is 4:8

Multiple Choice

Patrick has 2 black, 3 red, and 5 white toy cars. What is the ratio of red toy cars to all the toy cars?

• 3:5

• 1:3

• 3:11

• 3:10

More Examples of Simplifying Ratio

Multiple Choice

A class has 15 boys and 20 girls. What is the boy:girl ratio in simplest form?

• 4 : 5

• 10:13

• 35

• 3:5

Multiple Choice

There are 4 birds and 6 snakes. What is the ratio of birds to snakes in its lowest form?

• 6:4

• 2:3

• 1:3

• 4:10

Multiple Choice

Write the ratio in simplest form.

15 girls to 6 boys

• 5:2

• 15:2

• 5:6

• 15:6

A Ratio as a Fraction

Equivalent Ratios

Multiple Choice

Equivalent means....

• very important

• equal to

• one

• to solve

Multiple Choice

What is an equivalent ratio?

• Two or more ratios with the same values

• Two or more ratios that equal 1

• Two or more ratios that have a denominator of 1

• Two or more ratios that have different values

Multiple Select

How can we find equivalent ratios? ( choose 2 answers )

• Adding

• Dividing

• Multiplying

• Subtracting

Multiple Select

Find two equivalent ratios for 3 : 4 using multiplication

• 6 : 8

• 9 : 12

• 6 : 12

Multiple Select

Which ratio is equivalent to 12:20?

• 20:12

• 3:5

• 2:3

• 3:10

Practice