Significant Figure - Rounding

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| By Harry Hwong
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Harry Hwong
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Quizzes Created: 3 | Total Attempts: 7,143
| Attempts: 414
Quiz Lesson
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  • 1/20 Questions

    Round  0.0052135  to 3 significant figures.

    • 0.00
    • 0.01
    • 0.0052100
    • 0.00521
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Significant Figure - Rounding - Quiz
About This Quiz

Created By: Mr. Hwong™ of Arroyo High School, El Monte, CA
Free Chemistry education to all students: hwongclassroom. Com
Report any errors to me: harry. Hwong@emuhsd. Org
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Consider the number 0.987
The 9 is considered the first significant figure.
The 8 is considered the second significant figure.
and so on. . .
When rounding to the second significant figure, the 7 will cause the 8 to round up.
Answer to rounding to second significant figure: 0.99

Quiz Preview

  • 2. 

    Round  0.276  to 1 significant figure.

    • 0

    • 2

    • 0.3

    • 0.2

    Correct Answer
    A. 0.3
    Explanation
    2 is the first significant figure. The 7 will cause the 2 to round up.

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  • 3. 

    Round  0.298204  to 1 significant figure.

    • 0.2

    • 0

    • 0.3

    • 0.300000

    Correct Answer
    A. 0.3
    Explanation
    2 is the first significant figure. The 9 will cause the 2 to round up. It is incorrect to write zeros at the end, which will add additional significant figures.

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  • 4. 

    Round  80.2543  to 4 significant figures.

    • 80.2500

    • 80.2600

    • 80.25

    • 80.26

    Correct Answer
    A. 80.25
    Explanation
    5 is the fourth significant figure. The 4 will cause the 5 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 5. 

    Round  6.581  to 2 significant figures.

    • 6.5

    • 6.6

    • 6.0

    • 6.600

    Correct Answer
    A. 6.6
    Explanation
    5 is the second significant figure. The 8 will cause the 5 to round up. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 6. 

    Round  0.7438  to 2 significant figures.

    • 0.7430

    • 0.7400

    • 0.75

    • 0.74

    Correct Answer
    A. 0.74
    Explanation
    4 is the second significant figure. The 3 will cause the 4 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 7. 

    Round  0.002852895  to 3 significant figures.

    • 0.00285

    • 0.00

    • 0.002850000

    • 0.00286

    Correct Answer
    A. 0.00285
    Explanation
    5 is the third significant figure. The 2 will cause the 5 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 8. 

    Round  0.05060  to 2 significant figure.

    • 0.0

    • 0.051

    • 0.050

    • 0.05000

    Correct Answer
    A. 0.051
    Explanation
    Third 0 is the second significant figure. The 6 will cause the 0 to round up. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 9. 

    Round  0.003501  to 2 significant figures.

    • 0.0

    • 0.0035

    • 0.00350

    • 0.003500

    Correct Answer
    A. 0.0035
    Explanation
    5 is the second significant figure. The 0 will cause the 5 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 10. 

    Round  5.0063  to 3 significant figures.

    • 5.00

    • 5.01

    • 5.0100

    • 501

    Correct Answer
    A. 5.01
    Explanation
    The second 0 is the third significant figure. The 6 will cause the 0 to round up. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 11. 

    Round  0.0100331  to 5 significant figures.

    • 0.0100

    • 0.010033

    • 0.0100331

    • 0.0100330

    Correct Answer
    A. 0.010033
    Explanation
    The fourth 0 is the fifth significant figure. The 3 will cause the 0 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 12. 

    Round  481.4  to 3 significant figures.

    • 481

    • 482

    • 481.0

    • 482.0

    Correct Answer
    A. 481
    Explanation
    1 is the third significant figure. The 4 will cause the 1 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 13. 

    Round  8.2091  to 4 significant figures.

    • 8.2090

    • 8.209

    • 8.210

    • 8.21

    Correct Answer
    A. 8.209
    Explanation
    9 is the fourth significant figure. The 1 will cause the 9 to stay the same. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 14. 

    Round  0.000 025 385 631  to 3 significant figures.

    • 0.000

    • 0.000 025

    • 0.000 025 4

    • 0.000 025 400 000

    Correct Answer
    A. 0.000 025 4
    Explanation
    3 is the third significant figure. The 8 will cause the 3 to round up. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 15. 

    Round  0.002 365 730 8  to 4 significant figures.

    • 0.002

    • 0.002 366

    • 0.002 366 000 0

    • 0.002 365

    Correct Answer
    A. 0.002 366
    Explanation
    5 is the fourth significant figure. The 7 will cause the 5 to round up. It is incorrect to write zeros at the end, which will add additional significant figures.

    Rate this question:

  • 16. 

    Round  73860.01  to 3 significant figures.

    • 73900.

    • 74000

    • 73900

    • 73800

    Correct Answer
    A. 73900
    Explanation
    8 is the third significant figure. The 6 will cause the 8 to round up. The 0 is still necessary to keep the same value of the number.

    Rate this question:

  • 17. 

    Round  10.2  to 1 significant figure.

    • 1

    • 10

    • 10.

    • 10.0

    Correct Answer
    A. 10
    Explanation
    1 is the first significant figure. The 0 will cause the 1 to stay the same. The 0 is still necessary to keep the same value of the number.

    Rate this question:

  • 18. 

    Round  90710  to 2 significant figures.

    • 90000

    • 91

    • 91000

    • 91000.

    Correct Answer
    A. 91000
    Explanation
    0 is the second significant figure. The 7 will cause the 0 to round up. The 0 at the end of the round 1 is still necessary to keep the same value of the number.

    Rate this question:

  • 19. 

    Round  65.3  to 1 significant figure

    • 7

    • 70

    • 65

    • 6

    Correct Answer
    A. 70
    Explanation
    6 is the first significant figure. The 5 will cause the 6 to round up. The 0 is still necessary to keep the same value of the number.

    Rate this question:

  • 20. 

    Round  54123.82  to 4 significant figures.

    • 54124

    • 5412

    • 54120

    • 54120.00

    Correct Answer
    A. 54120
    Explanation
    2 is the fourth significant figure. The 3 will cause the 2 to stay the same. The 0 is still necessary to keep the same value of the number. The decimal and the two zeros after the decimal are not necessary and will add additional significant figures.

    Rate this question:

Quiz Review Timeline (Updated): Apr 15, 2025 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Apr 15, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 03, 2017
    Quiz Created by
    Harry Hwong
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