Show:
Ratios
Unit Rate
Proportions
Circumference
Area
100

Simplify the ratio: 8 to 30

4 to 15

100

A car travels 480 miles with 16 gallons of gas. How many miles can it travel per gallon of gas? 

30 miles per gallon

100

Do each pair of ratios form a proportion? 2/3 and 6/9

YES

100

The diameter of the circle is 7in. Find the Circumference of the circle.

C=pi x d

What is 21.99=21

100
Find the area when the radius is 4 in.

A = pi x r2

A= pi x 42

A= 50.3

200

Simplify the ratio: 30 to 5 

6:1

200

3 boxes can hold 12 books. How many books are held in each box? 

There are 4 books in each box

200

Do the ratios form proportions? 21/6 and 14.3/3 hr

No

200

The radius of the circle is 6 in. What is the Circumference?

C= 2 x pi x r

C= 37.69 = 37.7

200

The diameter of the circle is 10 in. What is the area?

A= pi r2

A= pi x 52

A= 78.5 in2

300

Simplify the ratio: 24 to 6

4:1

300

136 students fit into 8 classrooms. How many students can 1 classroom hold? 

17 students fit into 1 classroom. 

300

Do the ratios form proportions? 8/20 and 24/60 

Yes

300

We need to measure around the outside of a circle rug. The radius measures 11 in. What is the Circumference?

C= 2 x pi x r

C= 2 x pi x 11

C= 69.1

300

We need to measure the space the circular picture that is on the wall. The radius is 6 in. What is the area?

A = pi x r2

A= pi x 62

A= 113.1

400

There are 140 total students. 80 of the students are girls, and 60 of the students are boys. Write the ratio of girls to total students. 

80:140 

400

There are 52 pints of juice in 4 containers. How many pints of juice are in each container? 

There are 13 pints in each container 

400

Do the ratios form proportions? 5/7 and 25/49 

What is No

400

TRUE OF FALSE: A DIAMETER IS A CHORD

TRUE

400

TRUE OR FALSE: A CHORD IS ALWAYS A DIAMETER

FALSE

500

What is the ratio of I's to total letters in the word "Mississippi"?

4:11

500

A teacher speaks 1500 words in 25 minutes. How many words does she speak per minute? 

She speaks 60 words per minute

500

Do the ratios form proportions? 5/4 and 25/16

What is No

500

The diameter of the cookie is 2.5 in. What is the circumference?

C = pi x d

C= pi x 2.5

C= 7.85 in

500

The diameter of the circle is 13 cm. What is the radius and area?

Radius: 6.5

A= pi x r2

A= pi x 132

A= 530.9 cm2