Quiz about Exponents and Scientific Notation Review

Question 1

True or False:

Accepted Answer

True

Answer

False

Question 2

Simplify the expression.

Accepted Answer

75

Answer

76

Answer

7-5

Answer

1/75

Question 3

Simplify the expression.

Accepted Answer

622

Answer

122

Answer

130

Answer

630

Question 4

Anything raised to a power of zero is always:

Accepted Answer

1

Answer

0

Answer

itself

Answer

negative

Question 5

According to exponent rules, when we raise the power to a power we _______ the exponents.
Example: (d²)⁵

Accepted Answer

multiply

Answer

add

Answer

subtract

Answer

divide

Question 6

According to exponent rules, when we divide two powers with the same base we _______ the exponents.
Example: h⁸/h³

Accepted Answer

subtract

Answer

add

Answer

multiply

Answer

divide

Question 7

Simplify the expression: 5^-2

Accepted Answer

1/25

Answer

-10

Answer

1/10

Answer

-1/10

Question 8

Simplify the expression:

(3xy)²

Accepted Answer

32x2y2

Answer

6x2y2

Answer

3xy2

Answer

3x2y

Question 9

Simplify the expression:

Accepted Answer

4y6

Answer

4y22

Answer

30y6

Answer

30y22

Question 10

Simplify.

Accepted Answer

y15

Answer

y5

Answer

y2

Answer

2y5

Question 11

Simplify:

Accepted Answer

k/3

Answer

3k9

Answer

k/6

Answer

6k

Question 12

Simplify x³(x⁹)

Accepted Answer

x12

Answer

x3

Answer

x27

Answer

x6

Question 13

(-3h)3

Accepted Answer

-27h3

Answer

27h4

Answer

-9h3

Answer

-9h4

Question 14

In Australia, the people use approximately 2,240,000,000 pounds of bread in a year. How can we write this number in scientific notation?

Accepted Answer

2.240 x 10⁹

Answer

2.240 x 10^-9

Answer

224 x 10⁶

Answer

2.2 x 10⁶

Question 15

Select all that are correctly written in scientific notation.

Accepted Answer

3.4 x 10^-4

Accepted Answer

5 x 10-99

Accepted Answer

3.75 x 10

Answer

56.7 x 10³

Answer

105

Question 16

Add.

(2 x 10³) + (5 x 10⁵)

Accepted Answer

5.02 x 10⁵

Answer

7 x 102

Answer

10 x 10¹⁵

Answer

1.0 x 102

Question 17

Subtract

(3 x 10³) - (5 x 10²)

Accepted Answer

2.5 x 103

Answer

2 x 101

Answer

2.5 x 102

Answer

-2 x 101

Question 18

Multiply.

(4.2 x 10⁵) (3.1 x 10⁴)

Accepted Answer

1.302 x 10¹⁰

Answer

1.302 x 10⁹

Answer

7.3 x 101

Answer

13.02 x 10⁹

Question 19

Multiply:
(3.4 x 10⁵)(1.2 x 10^-3)

Accepted Answer

4.08 x 10²

Answer

4.08 x 10^-8

Answer

4.8 x 102

Answer

4.08 x 10^-15

Question 20

Divide.

(6.9 x 10⁷) / (2.3 x 10^-3)

Accepted Answer

3 x 10¹⁰

Answer

3 x 104

Answer

3 x 10-4

Answer

3 x 10-11

Question 21

There are approximately 3.1 x 10⁸ people in the United States. If each person has 4.1 x 10¹ coins, how many coins are there altogether?

Accepted Answer

1.271 x 10¹⁰

Answer

1.271 x 10⁹

Answer

1.271 x 10¹¹

Answer

1.271 x 10⁸

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