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 Unit 2: Study Guide

1.	There are 3 alligators, 16 turtles, and 12 snakes in the reptile
exhibit at the zoo. What is the ratio of turtles to snakes?

Write two ratios equal to each ratio below.
2.	 3.  14 : 21  4.  64 to 80

Find the unit rate for each situation.
5.	A package of 3 notebooks costs $3.39.	6. Fabric costs $12.76 for 4 yards.

Solve each proportion. 
7.		8.  	9. 

Find each answer using mental math.
1.	45% of 60	2.  60% of 160

3.	90% of 80	4.  35% of 60

Find each answer using a proportion.
5.	40% of 60	6.  85% of 300

7.	22% of 500	8.  37% of 400

Find each answer.
9.	25% of 100	10.  70% of 70

11.	75% of 40	12.  80% of 50

13.	24% of 80	14.  45% of 90

15. At the grocery store, you can buy 8 cans of soup for $4.40 or you could buy them individually for $0.60 each.  Which is the better deal?  Why?

a. Complete the table.

Number of Books		10	15	
Cost in Dollars		6		

b. Label and plot the ordered pairs.

		

16. Use the tape diagram below to answer the following.

9

0%

20%

100%

?

If 9 is the value of 20%, what is the total value?

16