Rational Numbers Quiz: Math Exam!

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| By Naveen24t
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Quizzes Created: 2 | Total Attempts: 4,375
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  • 1/9 Questions

    Integers are denoted by "Z"

    • True
    • False
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About This Quiz

Rational Numbers Quiz: Math Exam! tests understanding of basic rational number operations and properties. It covers calculations, order comparison, and identification of equivalent numbers, enhancing foundational math skills.

Rational Numbers Quiz: Math Exam! - Quiz

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  • 2. 

    The equivalent rational number for -12/30 with denominator 5.

    • 2/5

    • -2/5

    • 3/5

    • -3/5

    Correct Answer
    A. -2/5
    Explanation
    The given rational number is -12/30. To find the equivalent rational number with denominator 5, we need to simplify the fraction. By dividing both the numerator and denominator by their greatest common divisor (which is 6), we get -2/5. Therefore, the correct answer is -2/5.

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  • 3. 

    0.45÷5=

    • 0.9

    • 9

    • 90

    • 0.09

    Correct Answer
    A. 0.09
    Explanation
    When dividing 0.45 by 5, we can think of it as finding how many times 5 fits into 0.45. Since 5 does not fit evenly into 0.45, we need to use decimals. We start by placing a decimal point in the quotient. Then, we divide 5 into 45, which gives us 9. Finally, we place the decimal point in the quotient to get 0.09. Therefore, the correct answer is 0.09.

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  • 4. 

    The equivalent rational number of -3/5.

    • 9/15

    • -15/10

    • -6/15

    • -9/15

    Correct Answer
    A. -9/15
    Explanation
    The equivalent rational number of -3/5 is -9/15 because when we multiply the numerator and denominator of -3/5 by the same number (in this case, 3), we get -9/15. This is because multiplying both the numerator and denominator by the same number does not change the value of the fraction. Therefore, -9/15 is the equivalent rational number of -3/5.

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  • 5. 

    Every Integer is a Rational number.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    Every integer is a rational number because a rational number can be expressed as the ratio of two integers. Since every integer can be written as the ratio of itself and 1, it is considered a rational number.

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  • 6. 

    The increasing order of -3,-2,-5,0.

    • -5,-3,-2,0

    • 0,-2,-3,-5

    • -2,-3,-5,0

    • -2,-3,-5,0

    Correct Answer
    A. -5,-3,-2,0
    Explanation
    The correct answer is -5,-3,-2,0. This is the increasing order of the given numbers. Starting from the smallest number, which is -5, the numbers are arranged in ascending order, with each subsequent number being greater than the previous one. The final number in the sequence is 0, which is the largest number among the given numbers.

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  • 7. 

    5/6,1/6,7/6 are equivalent rational numbers.

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The given statement is false. 5/6, 1/6, and 7/6 are not equivalent rational numbers. Equivalent rational numbers have the same value or can be simplified to the same fraction. In this case, 5/6 and 1/6 have different values and cannot be simplified to the same fraction. Additionally, 7/6 is an improper fraction and cannot be equivalent to either 5/6 or 1/6. Therefore, the correct answer is false.

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  • 8. 

    Rational numbers are denoted by "R".

    • True

    • False

    Correct Answer
    A. False
    Explanation
    The statement "Rational numbers are denoted by 'R'" is false. Rational numbers are actually denoted by the letter "Q". The letter "R" is used to represent the set of real numbers, which includes both rational and irrational numbers.

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  • 9. 

    The average of 4.5,2.7,3.3.

    • 4.5

    • 3.5

    • 5.5

    • None

    Correct Answer
    A. 3.5
    Explanation
    The correct answer is 3.5 because to find the average, you need to add up all the numbers and then divide by the total number of values. In this case, the sum of 4.5, 2.7, and 3.3 is 10.5. Dividing 10.5 by 3 (the total number of values) gives us an average of 3.5.

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  • Current Version
  • Mar 22, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Sep 21, 2020
    Quiz Created by
    Naveen24t
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