Math 094 A - California State University, Northridge



Math 092 Name______________________________

Test Chapter 5

Show all work in the provided space. No calculators. Box your answers. Good luck!

1.) Write the following as a unit rate: 175 miles in 7 hours

2.) Find the unknown number x: [pic]

3.) Write each decimal as a percent:

a.) 0.2 b.) 1.38

4.) Write each percent as a decimal:

a.) 9% b.) 12.5%

(have a one-digit whole number like 9% so they have to realize it’s not .9 but .09)

5.) Write each percent as a fraction simplest form:

a.) 37.5% b.) 8%

(use one with a decimal so they have to start with 37.5/100 and simplify it)

6.) Write each fraction as a percent:

a.) [pic] b.) [pic]

(make one bigger than 100%)

7.) What percent of 250 is 20?

(two very basic % word problems)

8.) 12 is 15% of what number?

9.) Write each ratio as a fraction in simplest form:

a.) 16 to 24 b.) 3.2 to 4

(make part b a little more challenging by using a decimal and a whole number)

10.) Sandra can type 4 pages every 10 minutes. How many pages can she type in 35 minutes?

(proportion word problem)

11.) In a Math 092 class, there are 24 female students. If this represents 60% of the class, find how many students are in the class.

(% word problem – the whole is unknown)

12.) The price of a DVD player in 1998 was $300. Currently DVD players sell for

around $180. Find the percent decrease. (% increase/decrease problem)

13.) Sales tax in the state of Massachusetts is 5%. A brand new Toyota Camry costs

$20,000 (before taxes).

a.) Find the amount of sales tax. b.) Find the total cost of the car.

(% sales tax problem)

14.) A shirt is usually priced at $36. This weekend it will be sold for 30% off.

a.) What is the discount amount? b.) What is the sale price?

(% discount word problem)

15.) (your choice)

15 questions, lots of partial credit…..of course any problem with parts a and b are worth ½ point each……word problems (#’s 7, 8, 10, 11, and 12) can be given partial credit if they set the problem up correctly but then screw up the solution…..

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