Ratios

Ratios

by Cherhonda Murchison

Multiple Choice

Do the ratios form a proportion?

• Yes, they form a proportion.
• No, they do not form a proportion.

Multiple Choice

Determine the missing value in the table. 

• 15
• 3
• 1/3
• 9

Multiple Choice

Which statement best describes the relationship between x (dogs) and y(paws) in the table?

• Proportional

• Not Proportional

Multiple Choice

Which table shows a proportional relationship?

• A
• B
• C
• D

Multiple Choice

Does the graph show a proportional relationship?

• Yes
• No

Multiple Choice

Which is the best explanation of why this graph shows a non-proportional relationship?

• The line is not straight.

• The line does not touch the origin.

• The line is at the wrong angle.

• The graph shows a proportional relationship.

Open Ended

How do you know some thing is proportional on a grapH?

​State Standards

​

7.RP.A.1Compute unit rates associated with ratios of fractions, including ratios of lengths, areas and other quantities measured in like or different units.

​

7.RP.A.2

​Decide whether two quantities are in a proportional relationship, e.g., by testing for equivalent ratios in a table or graphing on a coordinate plane and observing whether the graph is a straight line through the origin.

​But first review......

​What is a integer?

​

​Think about it.

Fill in the Blanks

Multiple Choice

Solve

3 + (-5)

• -8

• 2

• 8

• -2

Multiple Choice

Sonny has $75 to spend. The purchase he wants to make requires $93. If he borrows the extra money that he needs, how much does he need to borrow?

• He needs to borrow $28

• $8

• He doesn't need to borrow any money.

• He needs to borrow $18.

Open Ended

What is a ratio?

Multiple Choice

Is this a rate or unit rate?

$$\frac{42}{7}$$  

• unit rate

• rate

• It's not.

Open Ended

How do you know this is a rate?

Multiple Choice

What is the unit rate $$\frac{18}{3}\ miles\ per\ hour$$  

• $$\frac{6}{7}miles\ per\ hour$$  

• $$\frac{6}{1}miles\ per\ hour$$  

• $$\frac{42}{1}\ miles\ per\ hour$$  

• $$\frac{7}{6}\ miles\ per\ hour$$  

Multiple Choice

Unit rate means that the numerator and denominator have both been reduced by the denominator.

• True

• False

• That's confusing

Poll

Are you comfortable with ratios?

• Yes

• No

• I am in between.

Multiple Select

Find THREE equivalent ratios for 4/5. Select all that apply.

• 5:4

• $$\frac{8}{10}$$

• 12:15

• 5 to 4

• 40 to 50

Multiple Select

Select TWO equivalent ratios for

$$\frac{4}{6}$$  

• $$\frac{2}{3}$$  

• $$\frac{12}{18}$$  

• $$\frac{1}{3}$$  

• $$\frac{3}{2}$$  

Multiple Choice

A class is attended by 16 boys and 32 girls. Write the ratio of GIRLS to BOYS as a fraction in SIMPLEST FORM.

• $$\frac{32}{16}$$

• $$\frac{1}{2}$$

• $$\frac{16}{32}$$

• $$\frac{2}{1}$$

Multiple Select

A store had 2 blue chairs for $22.78 or 6 red chairs for $67.80. Which color chair has the lower unit price?

• 2 blue chairs for $22.78

• 6 red chairs for $67.80