Multiplying And Dividing Using Significant Figures

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| By Jasondickerson2
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Jasondickerson2
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Quizzes Created: 2 | Total Attempts: 1,848
| Attempts: 1,648
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  • 1/10 Questions

    39.3 x 0.804 = ?

    • 31.6
    • 31.5
    • 31.597
    • 32.0
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About This Quiz

This quiz focuses on multiplication and division problems where answers are rounded to maintain significant figures, enhancing precision in mathematical operations.

Multiplying And Dividing Using Significant Figures - Quiz

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  • 2. 

    497.7 / 3.0 =  ?

    • 165.9

    • 172.3

    • 141.8

    • 152.7

    Correct Answer
    A. 165.9
    Explanation
    To calculate 68 divided by 0.00001, recognize that dividing by a decimal is equivalent to multiplying by its reciprocal. The reciprocal of 0.00001 is 100,000. Thus, the expression becomes 68 multiplied by 100,000. This multiplication results in 6,800,000. Therefore, 68 divided by 0.00001 equals 6,800,000.

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  • 3. 

    38 / 7 = ?

    • 5.429

    • 5.43

    • 5.4

    • 5

    Correct Answer
    A. 5
    Explanation
    The correct answer is 5 because when you divide 38 by 7, the quotient is 5 with a remainder of 3. Since the question asks for the quotient, the answer is 5.

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  • 4. 

    45.20 x 0.0071 =45.20 x 045.20 x 0.0071 = ?

    • 0.321

    • 0.32

    • 0.3209

    • 0.3

    Correct Answer
    A. 0.32
    Explanation
    The given equation can be simplified by multiplying 45.20 and 0.0071 first, which equals 0.32152. Then, multiplying this result by 045.20 will give the final answer. However, since 045.20 is the same as 45.20, the equation can be further simplified to 45.20 multiplied by 0.32152. Evaluating this multiplication gives the answer of 0.32.

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  • 5. 

    43,000 x 0.00546 = ?

    • 234.78

    • 234.9

    • 235

    • 230

    Correct Answer
    A. 230
    Explanation
    The given question requires multiplying 43,000 by 0.00546. When this calculation is performed, the result is 234.78. However, since the answer choices are rounded to the nearest whole number, the correct answer is 230, which is the closest whole number to 234.78.

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  • 6. 

    5.0009 x 0.06 = ?

    • 0.30005

    • 0.3001

    • 0.30

    • 0.3

    Correct Answer
    A. 0.3
    Explanation
    The product of 5.0009 and 0.06 is 0.300054, which can be approximated to 0.3.

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  • 7. 

    500 009 / 17.000 = ?

    • 29412

    • 29410

    • 29400

    • 29000

    Correct Answer
    A. 29412
    Explanation
    To find the result of the division, we divide 500,009 by 17,000. The quotient is 29 and the remainder is 4. Since the remainder is less than half of the divisor (8,500), we round down the quotient to 29. Therefore, the correct answer is 29,412.

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  • 8. 

    7.6 x 21.9 = ?

    • 166.4

    • 166

    • 170

    • 160

    Correct Answer
    A. 170
    Explanation
    The product of 7.6 and 21.9 is 166.44, which is closest to 170.

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  • 9. 

    2.15 x 3.1 x 100 = ?

    • 723.5

    • 680.5

    • 670.5

    • 666.5

    Correct Answer
    A. 666.5
    Explanation
    When multiplying three numbers, you can multiply any two numbers first and then multiply the result by the third number. Here, 2.15 multiplied by 3.1 is 6.665, and when this is multiplied by 100, it becomes 666.5.

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  • 10. 

    315 / 10 = ?

    • 31.5

    • 31

    • 32

    • 30

    Correct Answer
    A. 31.5
    Explanation
    Dividing 315 by 10 is straightforward. Imagine 315.0 with a decimal point. To divide by 10, shift the decimal one place to the left. This gives you 31.5. Essentially, you're reducing the value of 315 by one-tenth, resulting in 31.5.

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  • Current Version
  • Feb 06, 2025
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 26, 2017
    Quiz Created by
    Jasondickerson2
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