Adding And Subtracting Significant Figures

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| By Jasondickerson2
J
Jasondickerson2
Community Contributor
Quizzes Created: 2 | Total Attempts: 1,823
| Attempts: 201
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  • 1/10 Questions

    3.461728 + 14.91 + 0.980001 + 5.2631 = ?

    • 24.614
    • 24.61
    • 24.6
    • 24.6148
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About This Quiz

This quiz focuses on adding and subtracting significant figures, enhancing precision in measurements. It tests skills in applying rules for significant figures across different units like meters and grams, crucial for accurate scientific and mathematical calculations.

Adding And Subtracting Significant Figures - Quiz

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  • 2. 

    Subtract: 7.987 m - 0.54 m

    • 7.447 m

    • 7.4 m

    • 7.45 m

    • 7.5 m

    Correct Answer
    A. 7.45 m
    Explanation
    The given question asks to subtract 0.54 m from 7.987 m. When subtracting decimals, we align the decimal points and subtract each place value. In this case, subtracting 0.54 from 7.987 gives us 7.447. Rounding this to the nearest hundredth gives us 7.45 m, which is the correct answer.

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  • 3. 

    23.1 + 4.77 + 125.39 + 3.581 = ?

    • 156.8

    • 157

    • 156.84

    • 156.841

    Correct Answer
    A. 156.8
    Explanation
    The given expression involves adding four numbers: 23.1, 4.77, 125.39, and 3.581. When these numbers are added together, the sum is 156.841. However, since the question asks for the answer to be rounded to one decimal place, the correct answer is 156.8.

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  • 4. 

    Solve: 345.009 g - 23.009 g = ?

    • 322 g

    • 322.00 g

    • 322 g

    • 322.000 g

    Correct Answer
    A. 322.000 g
    Explanation
    The given question involves subtracting 23.009 g from 345.009 g. When subtracting decimals, we start from the rightmost place value and subtract each corresponding digit. In this case, subtracting 9 from 9 gives us 0, subtracting 0 from 0 gives us 0, subtracting 0 from 5 gives us 5, subtracting 3 from 3 gives us 0, and subtracting 2 from 4 gives us 2. Therefore, the result of the subtraction is 322.000 g.

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  • 5. 

    7000.40 + 6.2 + 6.32 = ?

    • 7012.9

    • 7012.92

    • 7013

    • 7013.0

    Correct Answer
    A. 7012.9
    Explanation
    The given equation requires adding three numbers: 7000.40, 6.2, and 6.32. When we add these numbers, we get a sum of 7012.92. However, the answer provided is 7012.9, which suggests that the answer has been rounded down to one decimal place.

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  • 6. 

    74.160 - 4.8 - 0.470 = ?

    • 68.89

    • 68.8

    • 68.9

    • 69

    Correct Answer
    A. 68.9
    Explanation
    The given question requires subtracting 4.8 and 0.470 from 74.160. When these values are subtracted, the result is 68.890. However, since the question asks for the answer rounded to one decimal place, the correct answer is 68.9.

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  • 7. 

    17.95 + 32.42 + 50 =   ?

    • 100.37

    • 100.4

    • 100.

    • 100.3

    Correct Answer
    A. 100.
    Explanation
    The given expression is a simple addition problem. By adding 17.95, 32.42, and 50, we get a sum of 100.37. Therefore, the correct answer is 100.37.

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  • 8. 

    Solve 416 - 409.3 = ?

    • 6.7

    • 6

    • 7

    • 7.0

    Correct Answer
    A. 7
    Explanation
    The correct answer is 7 because when you subtract 409.3 from 416, you get 6.7. However, since the question asks for the answer without any decimal places, the answer is rounded up to the nearest whole number, which is 7.

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  • 9. 

    13.59 + 23.25 - 20 = ?

    • 16.8

    • 16

    • 17

    • 16.84

    Correct Answer
    A. 17
    Explanation
    The given expression involves addition, subtraction, and a constant. When we add 13.59 and 23.25, we get 36.84. Subtracting 20 from this sum gives us a final result of 16.84. Therefore, the correct answer is 16.84.

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  • 10. 

    Solve: 3.12 g + 0.8 g + 1.033 g = ??

    • 5.0 g

    • 4.953 g

    • 5 g

    • 4.9 g

    Correct Answer
    A. 5.0 g
    Explanation
    The given equation is asking to find the sum of 3.12 g, 0.8 g, and 1.033 g. Adding these values together gives a total of 4.953 g. However, the closest answer choice to this sum is 5.0 g, which is the correct answer.

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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
  • Apr 26, 2017
    Quiz Created by
    Jasondickerson2
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