Math 150 – Fall 2015: Quiz 1 – Sections 1A & 1B
Group Worksheet (5 pts):
Yes or No Section Number(5 pts):
(circle yes if this is the worksheet your group would like to be graded)
If this is NOT the group worksheet, print your name here:
(-10 pts if you don’t turn in an individual worksheet with your name in this blank)
For BOTH group and individual worksheets, print the names of all members of the group who attended lab
and contributed to the worksheet here (10 pts):
Directions: You may not use your class notes, book, calculator, cell phone, any electronic devices, etc.
Your grade will be determined by your final answer and the work to justify it. You must show all your work
to receive credit. Your group should turn in one group worksheet, and each individual should turn in their
own worksheet. Only the group worksheet will count as part of your grade.
1. (3 pts each) In the blank after each equation write the mathematical property from the list that was
used. Each equation uses one property, but not all the properties will be used.
Properties: Commutative, Associative, Distributive, Additive Identity, Multiplicative Identity, Additive Inverse, Multiplicative Inverse, Subtraction, Division
Equations:
(a) 7 − 13 = 7 + (−13)
(b) −127
−1
127
=1
√
√
√
(c) 13 y 2x3 − 7x = 26x3 y − 91x y
√ √
√
√
(d) 9x2 − 5 x + 7 x = 9x2 + (−5 x + 7 x)
√
√
(e) 10 x 8x2 − 5x + 3 = 8x2 − 5x + 3 10 x
2. (16 pts) Circle all the numbers below that are rational numbers √
−15
9π
−13
−13i
1.279
5 7
7
−11.529
√
36 − 6
3. (24 pts) Simplify the following expression:
−1245 · 5 + 100 · 444 · 347
1 −44
30 1611 (−36)22 + 12
4. (25 pts) Fully simplify the following expression and rationalize the denominator if necessary.
√
13 x6 z 4
p
z −2 3 −8y 3 (x + 3)