Ratios and Rates

Finding the Missing Value (Ratios)

100

1:4

2:8

3:x

4:16

What is x?

12

200

2:3

4:6

8:x

18:27

What is x?

12

300

5:4

15:12

x:16

25:20

What is x?

20

400

4:3

8:6

x:12

20:15

What is x?

16

500

2:18

4:36

14:126

x:144

What is x?

16

Calculating Rates

100

$4.39/11.5 oz

How much for 1 oz

$0.38

200

$2.24/9.75oz

How much for 1 oz?

$0.23

300

$2.49/2 L

How much for 1 L?

$1.25

400

$1.29/1.25L

How much for 1 L?

$1.03

500

$6.97/120 items

How much is 1 item?

$0.06

Comparing Rates

100

Sprite is $1.89/2L

Fanta is $1.00/2L

Which is a better deal?

Fanta

200

Butterfinger cost $3.98/6 bars

Snickers cost $4.37/8 bars

Which is the better deal?

Snickers

300

Green Paper is $8.67/200 sheets

Pink Paper is $10.16/350 sheets

Which is a better deal?

Pink Paper

400

Chocolate Milk is $2.04/16oz

Strawberry Milk is $2.43/18 oz

Which is a better deal?

Chocolate Milk

500

Restaurant A sells pizza for $2.50/slice

Restaurant B sells pizza for $5.00/2 slices

Which is a better deal?

Neither, they are equal

Writing Ratios

100

How many j:k

k j j k k j k k

3:5

200

How many h:x

h h h x x x x

h h h x x x x 

h h h x x x x

h h h x x x x

12:16

or

3:4

300

How many a:o

a a a a o o a a o

a a a a o o a a o 

a a a a o o a a o

18:9

or 

2:1

400

What is g:p

g g g p p g p g g g p

g g g p p g p g g g p

14:8

or 

7:4

500

What is w:y

w y w y w w w y y w y w w w y 

y w y y w y w w w y y y y w w 

w w w y y y y y w w w w y y y

22:22

or

1:1

Surprise

100

8²

64

200

3x-2=7

Solve for x

x=3

300

234/6

39

400

12/18-1/3

1/3

500

3²+7x-12=18

Solve for x

x=3