Multiplying And Dividing Using Significant Figures

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| By Jasondickerson2
J
Jasondickerson2
Community Contributor
Quizzes Created: 2 | Total Attempts: 1,149
Questions: 10 | Attempts: 994

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Questions and Answers
  • 1. 

    7.6 x 21.9 = ?

    • A.

      166.4

    • B.

      166

    • C.

      170

    • D.

      160

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

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  • 2. 

    38 / 7 = ?

    • A.

      5.429

    • B.

      5.43

    • C.

      5.4

    • D.

      5

    Correct Answer
    D. 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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  • 3. 

    2.15 x 3.1 x 100 = ?

    • A.

      7

    • B.

      680.5

    • C.

      670.5

    • D.

      666.5

    Correct Answer
    D. 666.5
    Explanation
    The given expression can be simplified by multiplying the numbers together. 2.15 multiplied by 3.1 gives us 6.665, and when we multiply this by 100, we get 666.5. Rounding this to the nearest whole number gives us 666.5. 

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  • 4. 

    5.0009 x 0.06 = ?

    • A.

      0.30005

    • B.

      0.3001

    • C.

      0.30

    • D.

      0.3

    Correct Answer
    D. 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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  • 5. 

    500 009 / 17.000 = ?

    • A.

      29412

    • B.

      29410

    • C.

      29400

    • D.

      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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  • 6. 

    39.3 x 0.804 = ?

    • A.

      31.6

    • B.

      31.5

    • C.

      31.597

    • D.

      32.0

    Correct Answer
    A. 31.6
    Explanation
    The given question asks for the product of 39.3 and 0.804. To find the answer, we multiply these two numbers together. The result is 31.5972, but since the question asks for the answer rounded to one decimal place, we round the answer to the nearest tenth, which gives us 31.6.

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  • 7. 

    45.20 x 0.0071 =45.20 x 045.20 x 0.0071 = ?

    • A.

      0.321

    • B.

      0.32

    • C.

      0.3209

    • D.

      0.3

    Correct Answer
    B. 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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  • 8. 

    497.7 / 3.0 =  ?

    • A.

      165.9

    • B.

      165

    • C.

      166

    • D.

      170

    Correct Answer
    A. 165.9
    Explanation
    This is calculated by dividing the numbers as you would with whole numbers, aligning the decimal points appropriately. The result, 165.9, is obtained by straightforward division, ensuring the quotient retains the decimal place accuracy from the original numbers. Thus, 497.7 divided by 3.0 equals 165.9.

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  • 9. 

    43,000 x 0.00546 = ?

    • A.

      234.78

    • B.

      234.9

    • C.

      235

    • D.

      230

    Correct Answer
    D. 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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  • 10. 

    315 / 10 = ?

    • A.

      31.5

    • B.

      31

    • C.

      32

    • D.

      30

    Correct Answer
    A. 31.5
    Explanation
    The division of 315 by 10 equals 31.5.

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  • Current Version
  • Jul 11, 2024
    Quiz Edited by
    ProProfs Editorial Team
  • Apr 26, 2017
    Quiz Created by
    Jasondickerson2
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