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Worksheets7.1-7.4 Review
Total questions: 10
Worksheet time: 5mins
Name
Class
Date
1.
What is the simplified for of 3a4b-2c3?
a)
(81a4c3)/(b2)
b)
(81a4)/(b2c3)
c)
(3a4)/(b2c3)
d)
(3a4c3)/(b2)
2.
What is -a-2 if a =-5?
a)
-25
b)
25
c)
-1/25
d)
1/25
3.
Which of the following simplifies to a negative number?
a)
-4-4
b)
(-4)-4
c)
4-4
d)
1/(4-4)
4.
Which of the following expressions is written in scientific notation?
a)
73.4 X 105
b)
0.09 X 107
c)
80 x 103
d)
4.22 x 10-5
5.
Which of the following is .0000000708 written is scientific notation?
a)
7.08 x 10-8
b)
7.8 x 10-8
c)
708 x 10-10
d)
70.8 x 10-9
6.
Which expression represents the largest number?
a)
40.1 x 10-6
b)
4.1 x 10-7
c)
0.411 x 10-6
d)
0.04001 x 10-5
7.
What is the simplified form of (-3x3y2)(5xy-1)?
a)
(-15x3)/(y2)
b)
-15x3y2
c)
-15x4y1
d)
15x4y1
8.
What is the simplified form of -9m-2n5 ⋅ 2m-3n-6?
a)
-18m5n
b)
(-18)/(m5n)
c)
(-18m6)/(n30)
d)
-18m6n30
9.
What is the simplified form of (3.25 x 103)(7.8 x 106) written in scientific notation?
a)
2.535 x 1010
b)
2.535 x 1018
c)
2.535 x 1019
d)
25.35 x 109
10.
What is the simplified form of (2 x 102)2 in standard notation?
a)
4.0 x 104
b)
2.0 x 104
c)
40000
d)
20000
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