MATH 045
Name:__________________________
Chapter 2 Test (DR – 201320 A)
Instructor:
_____________________
Show all your work in an organized, easy to follow manner. Your work must support your
answer. No calculators. There are 30 problems, with each problem worth 3 or 4 points. The small
number to the right of each answer line shows the point value for that item. Work out the problems in
the space provided and write your final answer on the corresponding line on the left.
1. List any formulas, information, tips, etc. that you think will be helpful for you on
this test. You will earn one point for each correct item you list, up to three points.
a)___________________________________________________________________________
b)____________________________________________________________________________
c)___________________________________________________________________________
Insert > or < between the pair of integers to make a true statement (problem worth 3 points):
2.
– 29 _____ – 23
Simplify each expression.
3. ______________(3)
3. – 3 •   2 
3
4.  17
4. ______________(3)
5. ______________(4)
5.
 4  5   10
1 2  3 
6. 3  2  (2)    4
6. ______________(3)
7. ______________(3)
7. 12  9  3
8. ______________(3)
9. ______________(3)
9. 5  ( 14)  (  8)  20
8. 3(2)(2)   4
MAT 045 CH. 2 TEST DR–2013020 A p.2
Simplify each expression.
10. ______________(3)
10.
36
 12
11.
24
3
11. ______________(3)
12. ______________(3)
SHOW SOME WORK!! NO WORK = NO CREDIT!!
4
12.
13.
24
 2 
13. ______________(3)
14. ______________(4)
14.
9( 2)  6
738
15.
28    4 • 7
16.
16  24  (  6)
 4  ( 1)2
17.
48   6   12 • 3
19.
13  4 
15. ______________(3)
16. ______________(4)
17. ______________(4)
18. ______________(4)
19. ______________(3)
18. 7 • 6  4 • 3    5
2
2
MAT 045 CH. 2 TEST DR–2013020 A p.3
Write an expression for the following and calculate the result:
20. _______________________(3)
The sum of –7 and –11.
21. _______________________(3)
The product of –7 and –11.
Evaluate each expression if x = – 7, and y = – 4.
22. ______________(3)
– 8x
y
22. xy  9
23.
24. x 2
25.
– y2
26. y2 – x 2
27.
– –x
23. ______________(3)
24. ______________(3)
25. ______________(3)
26. ______________(4)
27. ______________(4)
MAT 045 CH. 2 TEST DR–2013020 A p.4
Solve each problem. These problems are designed to develop your critical thinking skills.
28. _________________(4)
28. The melting point of radon is 35o . If the melting point of
nitrogen is five times the melting point of radon, find the
melting point of nitrogen.
29. _________________(4)
29. Myles Long is a hiker standing on top of Longs Peak at 14,256
ft. above sea level. Indy Nile is a diver under water at 112 ft.
below sea level. What is the difference in elevation between
Myles and Indy? (HINT: Draw a picture first.)
30. _________________(4)
30. The temperatures in Colorado Springs over a four-day period
were  9o , 4o ,  7o , and 12o . What was the average
temperature over the four-day period?