﻿ Scientific Notation Worksheets - Page 3 | Problems & Solutions
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Scientific Notation Worksheets
• Page 3
21.
Which among the following numbers is the smallest? a. 6.31 × 10- 7 b. 3.07 × 10- 6 c. 6.31 × 10- 8 d. 8.61 × 10- 8

#### Solution:

Order the exponents.

- 8 < - 7 < - 6
So, 10- 8 < 10- 7 < 10- 6.

Compare numbers with the same exponent.

6.31 < 8.61
So, 6.31 × 10- 8 < 8.61 × 10- 8 < 6.31 ×10- 7 < 3.07 × 10- 6.

Therefore, the smallest number is 6.31 × 10- 8.

Correct answer : (3)
22.
Choose the largest number. a. 2.51 × 105 b. 4.01 × 104 c. 2.51 × 106 d. 3.41 × 105

#### Answer: (c)

Correct answer : (3)
23.
Which among the following numbers is the largest? a. 8.52 × 104 b. 9.92 × 103 c. 8.52 × 105 d. 9.32 × 104

#### Answer: (c)

Correct answer : (3)
24.
Which among the following numbers is the smallest? a. 7.81 × 102 b. 6.31 × 104 c. 6.31 × 103 d. 7.21 × 103

#### Answer: (a)

Correct answer : (1)
25.
Choose the smallest number. a. 4.81 × 102 b. 3.31 × 103 c. 3.31 × 104 d. 4.21 × 103

#### Answer: (a)

Correct answer : (1)
26.
Identify the largest number. a. 3.04 × 10-4 b. 6.92 × 10-4 c. 6.32 × 10-4 d. 6.92 × 10-3

#### Answer: (d)

Correct answer : (4)
27.
Identify the smallest number. a. 3.61 × 10- 3 b. 1.04 × 10- 2 c. 2.31 × 10- 3 d. 3.61 × 10- 4

#### Solution:

Order the exponents.

- 4 < - 3 < - 2
So, 10- 4 < 10- 3 < 10- 2.

Compare numbers with the same exponent.

2.31 < 3.61
So, 3.61 × 10- 4 < 2.31 × 10- 3 < 3.61 × 10- 3 < 1.04 × 10- 2.

Therefore, the smallest number is 3.61 × 10- 4.

Correct answer : (4)
28.
Which among the following numbers is the largest? a. 5.81 × 10- 7 b. 4.71 × 10- 7 c. 6.21 × 10- 8 d. 3.71 × 10- 6

#### Solution:

Order the exponents.

- 6 > - 7 > - 8
So, 10- 6 > 10- 7 > 10- 8.

Compare numbers with the same exponent.

5.81 > 4.71
So, 3.71 × 10- 6 > 5.81 × 10- 7 > 4.71 × 10- 7 > 6.21 × 10- 8.

Therefore, the largest number is 3.71 × 10- 6.

Correct answer : (4)
29.
Choose the smallest number. a. 9.35 × 107 b. 5.33 × 108 c. 5.33 × 109 d. 6.33 × 108

#### Solution:

Order the exponents.

7 < 8 < 9
So, 107 < 108 < 109.

Compare numbers with the same exponent.

5.33 < 6.33
So, 9.35 × 107 < 5.33 × 108 < 6.33 × 108 < 5.33 × 109.

Therefore, the smallest number is 9.35 × 107.

Correct answer : (1)
30.
Which of the following is equivalent to 10-3? a. - 0.001 b. 0.01 c. - 1000 d. 0.001

#### Answer: (d)

Correct answer : (4)

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