Free Printable Unit 7 Exponent Assessment Prep Grade 8

1.

$\frac{11^{-2}}{11^{-6}}^{ }$

a)

$11^{-8}$

b)

$11^4$

c)

$11^{12}$

d)

$11^8$

2.

$6^{-3\ }\ x\ \ 6^{-5}$ Which of the following is equivalent to this

a)

$36^{15}$

b)

$6^8$

c)

$6^{15}$

d)

$6^{-8}$

3.

$7^{3\ }\cdot\ 7^4$ simplify

a)

$7^7$

b)

$7^{12}$

c)

$49^{12}$

d)

$14^7$

4.

$\frac{4^6}{4^2}$ Simplify the quotient:

a)

$4^{12}$

b)

$4^{-4}$

c)

$4^4$

d)

$4^8$

5.

$4^3$ What is another way of expressing

a)

4 x 4 x 4

b)

4 + 4 + 4

c)

4 + 3

d)

$3^4$

6.

$10^{-3}$ This expression is equivalent to:

a)

30

b)

0.1

c)

0.01

d)

0.001

7.

$3^4\cdot3^?=3^9$ Find the missing exponent that makes the equation true.

a)

5

b)

13

c)

10

d)

4

8.

$6^2\cdot6^3$ Simplify the expression:

a)

$6^6$

b)

$8\cdot8$

c)

$6^5$

d)

$36^5$

9.

$4^{-2\ }x\ 4^{-3}$ Which expression is equivalent to:

a)

$\frac{1}{4^6}$

b)

$-\frac{1}{4^5}$

c)

$-\frac{1}{4^6}$

d)

$\frac{1}{4^5}$

10.

$7^1\ x\ 7^{-3}$ Simplify:

a)

$\frac{1}{650}$

b)

$\frac{1}{49}$

c)

$49$

d)

$2,234$

11.

$\frac{3^5\cdot\ 3^2}{3^6}$ What is the value of:

a)

333

b)

81

c)

9

d)

3

12.

If a hair has a diameter of 0.00003 inches, which of these is a good estimate given in scientific notation?

a)

$3\ x\ 10^4$

b)

$3\ x\ 10^{-5}$

c)

$3\ x\ 10^{-6}$

d)

$3\ x\ 10^3$

13.

Some galaxies in the universe could contain as many as

1,000,000,000,000,000 stars. Which of these is a good estimate of this number in scientific notation?

a)

$1\ x\ 10^{32}$

b)

$1\ x\ 10^{-20}$

c)

$1\ x\ 10^{25}$

d)

$1\ x\ 10^{15}$

14.

The number one million consists of a 1 followed by 6 zeroes. Which of the following is an appropriate estimate of this number?

a)

$10\ x\ 10^8$

b)

$30\ x\ 10^{45}$

c)

$1\ x\ 10^6$

d)

$1\ x\ 10^{-6}$

15.

The sound frequency for most insects occur at about 15,000 Hz. Which of these represent that frequency in scientific notation?

a)

$1.5\ x\ 10^4$

b)

$15\ x\ 10^8$

c)

$1.5\ x\ 10^2$

d)

$1.5\ x\ 10^6$

Unit 7 Exponent Assessment Prep Grade 8

Total questions: 15

Worksheet time: 17mins

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