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Scientific Notation Problems

Total questions: 25

Worksheet time: 1hrs 15mins

Name
Class
Date
1.

What is (8.5 x 108) - (6.4 x 107)

a)

2.1 x 101

b)

7.86 x 108

c)

3.35 x 106

d)

2.1 x 108

2.

One type of insect is 0.000025 meters long. What is this distance in scientific notation?

a)

2.5 x 104

b)

25 x 105

c)

2.4 x 10-4

d)

2.5 x 10-5

3.

An Asian country has a population of 19,700,000. What is this number in scientific notation?

a)

1.97 x 105

b)

1.97 x 107

c)

197 x 105

d)

1.97 x 108

4.

What is the sum of (7.4 x 108) + (3.3 x 106) written in scientific notation?

a)

7.433 x 108

b)

10.7 x 108

c)

1.07 x 106

d)

7.433 x 1014

5.

What is the difference between the diameter of Saturn and the diameter of Neptune? (1.21 x 108) - (4.9 x 107)

a)

3.69 x 108

b)

2.345 x 107

c)

7.2 x 107

d)

1.43 x 108

6.

What is 9.27E9 written in scientific notation?

a)

9.27 x 109

b)

9,279

c)

927,000,000,000

d)

927 x 9

7.
Multiply:
(9.4 x 106)(3.2 x 105)
a)
30.08 x 1011
b)
3.8 x 101
c)
3.008 x 1012
d)
2.9375 x 101
8.
Divide:
(6.9 x 107) / (2.3 x 10-3)
a)
3 x 1010
b)
3 x 104
c)
3 x 10-4
d)
3 x 10-11
9.
What is the simplified version of
a)
3.9 x 106
b)
4 x 1020
c)
4 x 106
d)
3.9 x 1020
10.
Solve:
(2.2 x 10 4) (7.1x 10 5)
a)
1.562 x 1010
b)
15.62 x 109
c)
15.62 x 1020
d)
1.562 x 1020
11.
Solve:
(6 x 106) / (2 x 103)
a)
12 x 103
b)
3 x 109
c)
1.2 x 104
d)
3 x 103
12.
Solve:
(9 x 10-6) / (3 x 10-3
a)
27 x 10-9
b)
3 x 10-3
c)
3 x 10-9
d)
27 x 10-3
13.
Multiply:
(3.4 x 105)(1.2 x 10-3)
a)
4.08 x 10-8
b)
4.8 x 102
c)
4.08 x 102
d)
4.08 x 10-15
14.
Write the answer in scientific notation.
7.3 x 105  +   3.7 x 105  =
a)
11.0 x 105
b)
1.1 x 104
c)
1.10 x 1011
d)
1.1 x 10 6
15.
Write the answer in scientific notation.
5 x 108 -   3.4 x 108  =
a)
2.4 x 108
b)
2.4 x 100
c)
1.6 x 1016
d)
1.6 x 108
16.
Write the answer in scientific notation.
4.1 x 105 +   5.5 x 106  =

a)
5.91 x 106
b)
9.6 x 105
c)
9.6 x 1011
d)
4.65 x 105
17.
Add using scientific notation.
(5.2 x 10⁷) + (3.01 x 10⁴)
a)
5.20301 x 10¹¹
b)
.520301 x 10⁷
c)
5.20301 x 10⁷
d)
5.20301 x 10⁸
18.
Solve:
(8.0 x 1013) - (7.5 x 1012)
a)
1.55 x 1013
b)
7.25 x 1013
c)
5.0 x 1011
d)
5.0 x 1013
19.
Which is the largest?
4.8 x 10-6 
1.3 x 1020
3.1 x 10-4
9.2 x 10-5 
9.5 x 1032
5.9 x 10-5
2.9 x 1021
8.4 x 1019
a)
9.5 x 1032
b)
3.1 x 10-4
c)
8.4 x 1019
d)
4.8 x 10-6 
20.
How do you write 1.28 x 10-4
a)
0.128
b)
0.0000128
c)
0.0128
d)
0.000128
21.

Write the number 0.853 in scientific notation.

a)

0.853×1000.853\times10^0

b)

85.3×10285.3\times10^{-2}

c)

8.53×1008.53\times10^0

d)

8.53×1018.53\times10^{-1}

22.

Write the number 7.45×1037.45\times10^3  in standard notation.

a)

0.00745

b)

7,450

c)

745

d)

74,500

23.
Which of the following numbers is the SMALLEST?
a)
8.7 x 103
b)
3 x 104
c)
1.3 x 108
d)
9 x 102
24.
Write 0.000972 in scientific notation.
a)
9.72 x 10-4
b)
9.72 x 10-3
c)
972 x 10-4
d)
9.72 x 104
25.
Write 2.08 x 102  in standard form.
a)
208
b)
0.0208
c)
20,800
d)
0.208