Significant Figure - Addition Subtraction
Created By: Mr. Hwong™ of Arroyo High School, El Monte, CA
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Significant Figure - Addition Subtraction Rule: Round answers to the least accurate digit.
Questions and Answers
- 1.
Solve and round accordingly: 4.928 + 37.71 + 5.2543
- A.
47.8923
- B.
47.9
- C.
47.892
- D.
47.89
Correct Answer
D. 47.89Explanation
The least accurate digit is from 37.71, which has 2 decimal places.Rate this question:
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- 2.
Solve and round accordingly: 8.14 + 6.7550 + 6.504
- A.
21.3990
- B.
21.399
- C.
21.40
- D.
21.4
Correct Answer
C. 21.40Explanation
The least accurate digit is from 8.14, which has 2 decimal places. The last zero is required to maintain 2 decimal places.Rate this question:
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- 3.
Solve and round accordingly: 5.91 - 7.4
- A.
13.31
- B.
13.3
- C.
-1.49
- D.
-1.5
Correct Answer
D. -1.5Explanation
The least accurate digit is from 7.4, which has 1 decimal places. This is a subtraction problem and has led to a negative answer.Rate this question:
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- 4.
Solve and round accordingly: 5.494 - 4.30
- A.
1.19
- B.
9.79
- C.
1.194
- D.
1.2
Correct Answer
A. 1.19Explanation
The least accurate digit is from 4.30, which has 2 decimal places.Rate this question:
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- 5.
Solve and round accordingly: 7.1615 + 44.8200
- A.
51.9815
- B.
51.981
- C.
51.98
- D.
52.0
Correct Answer
A. 51.9815Explanation
The least accurate digit is from both numbers, which has 4 decimal places.Rate this question:
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- 6.
Solve and round accordingly: 63.478 - 52.12
- A.
115.598
- B.
115.59
- C.
115.60
- D.
11.36
Correct Answer
D. 11.36Explanation
The least accurate digit is from 52.12, which has 2 decimal places.Rate this question:
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Mar 22, 2023Quiz Edited by
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Sep 03, 2017Quiz Created by
Harry Hwong
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