1. This document contains a math test with 34 multiple choice questions covering exponents, scientific notation, averages, and other algebra topics. 2. The test examines skills like simplifying expressions with exponents, writing numbers in scientific and standard notation, identifying equivalent algebraic expressions, and calculating averages. 3. The questions require choosing the correct multiple choice answer that represents the outcome of performing the described mathematical operation or identifies the numerical result.

1. Name: Jorge Salay Period: 5
Unit 7 Test
Write each answer in simplified exponential form.
1. 6813 * 6819 = 6832 2. (78)4 = 732
4
2 24 1
  =
3.  9  4. 16-4 =
94 164
3
1 1 13
  =
5. 8-9 = 6.  3 
89 3 33
83x 4117
2
= 4115
7. (8x)3 = 8. 41
514
2330 6
= 58
10 3
9. (23 ) = 10. 5
11. (ab)2= 12. (45)7 =
2
Ab 2
435
13. (195)0 = 14. 108 * 1024 =
190 1032
0
 4 324
  = 40150 = 35
15.  15 
19
16. 3
17. 8m2n2 * 2m3n =
16m5n3
18. 4p4r2 * 2pr5 = 8p5r7
19. 3xy6 * 10xy6 = 30x2y12
18m3 n 3m1
20. =
6m 2 n 4 N3
24 j 3 k 6
21.
5 4
=
4j k J2k3
14c 3d 3 7c2
22. =
2cd 4 D1
Write in scientific notation.
3.5*109 4.72*10-5

2. Name: Jorge Salay Period: 5
23. 35,000,000= 24. 0.0000472=
25. 1,780,000= 1.78*107 26. 0.0000000051= 5.1*109
Write in standard notation.
27. 2.45 * 108= 245000000. 28. 9.9 * 10-5= .000099
29. 4x3 * 3xy2 * 2xy2 is equivalent to:
D a. 9x3y4
b. 9x5y4
c. 24x3y4
d. 24x5y4
e. 24x5y6
30. 4a3 * 5a8 = ?
D a. 9a5
b. 9a11
c. 9a24
d. 20a11
e. 20a24
31. Which of the following numbers is
C the least in value?
a. 0.02 * 104
b. 0.2 * 103
c. 2.0 * 10-2
d. 20.0 * 102
e. 0.002 * 105
32. Which of the following operations will
E produce the largest result when substituted
for the blank in the expression:
5 _______ 2
a. averaged with
b. divided by
c. minus
d. plus
e. multiplied by

3. Name: Jorge Salay Period: 5
33. A group of friends were comparing
C the number of cards in their baseball
card collection. The number of cards
is indicated in the table below.
Friend A B C D E
Number of Cards 30 110 70 200 70
What is the average number of
baseball cards in the collection of the 5
friends?
a. 70
b. 82
c. 96
d. 102.5
e. 120
34. As part of a school report on the
C cost of gasoline, Raquel wants to find
the average cost of purchasing a
gallon of regular unleaded gasoline
from local gas stations. She surveys 4
stations and finds the cost per gallon
of regular unleaded gas from he 4
stations to be $2.45, $2.50, $2.49,
and $2.56, respectively. Using this
data, what is the average cost of
purchasing one gallon of regular
unleaded gasoline from these 4 gas
stations?
a. $2.55
b. $2.53
c. $2.50
d. $2.49
e. $2.45