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Scientific Notation Word Problems
Practice Problems
Scientific Notation Word Problems
- Page 1
1.
Find the weight of 100 elephants, if each elephant weighs 1.75 × 103 kgs.
| a. | 1.75 × 106 kgs | ||
| b. | 1.75 × 104 kgs | ||
 | c. | 1.75 × 105 kgs | |
| d. | 1.75 × 101 kgs |
Answer: (c)
Correct answer : (3)
2.
Simplify 1.86 × 102 ÷ 3.1 × 10- 5 and express the result in scientific notation.
| a. | 0.6 × 106 | ||
| b. | 6.0 × 106 | |
| c. | 6.0 × 105 | ||
| d. | 6.0 × 107 |
Answer: (b)
Correct answer : (2)
3.
Simplify and express the result in scientific notation.
(7.2 × 106) (5.8 × 103)
| a. | 4.176 | ||
| b. | 4.176 × 108 | ||
| c. | 4.176 × 109 | ||
| d. | 4.176 × 1010 |
Answer: (d)
Correct answer : (4)
4.
Simplify and write the result in scientific notation.
1.73 × 10- 3 - 3.62 × 10- 4
| a. | 1.368 × 103 | ||
| b. | 13.68 × 10- 3 | ||
| c. | 1.368 × 10- 4 | ||
| d. | 1.368 × 10- 3 |
Answer: (d)
Correct answer : (4)
5.
Simplify and identify the result in scientific notation.
4.75 × 105 - 2.34 × 105
| a. | 2.41 × 105 | |
| b. | 24.1 × 104 | ||
| c. | 2.41 × 104 | ||
| d. | 241 × 105 |
Answer: (a)
Correct answer : (1)
6.
Add and identify the result in scientific notation.
1.78 × 102 + 5.02 × 101
| a. | 2.282 × 103 | ||
| b. | 228.2 × 102 | ||
| c. | 22.82 × 102 | ||
| d. | 2.282 × 102 |
Answer: (d)
Correct answer : (4)
7.
Add and identify the result in scientific notation.
1.28 × 106 + 3.92 × 105
1.28 × 106 + 3.92 × 105
| a. | 167.2 × 104 | ||
| b. | 1672 × 103 | ||
| c. | 16.72 × 105 | ||
| d. | 1.672 × 106 |
Answer: (d)
Correct answer : (4)
8.
Objective: Read, write, and represent very large and very small numbers in a variety of forms including exponential.
Simplify the product(24.2 × 1013) (17.5 × 10 - 8) and write the result in scientific notation.
Simplify the product
| a. | 4.235 × 10- 7 | ||
| b. | 423.5 × 105 | ||
| c. | 4.235 × 107 | |
| d. | 4.235 × 108 |
Answer: (c)
Correct answer : (3)
9.
Objective: Read, write, and represent very large and very small numbers in a variety of forms including exponential.
Simplify
Simplify
| a. | 4 × 1012 | ||
| b. | 4 × 10- 1 | ||
| c. | 0.4 × 1012 | ||
| d. | 4 × 1011 |
Answer: (d)
Correct answer : (4)