Operations With Fractions - Unit Quiz

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| By Mrssurratt
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Mrssurratt
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Quizzes Created: 5 | Total Attempts: 18,451
Questions: 10 | Attempts: 4,238

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Operations With Fractions - Unit Quiz - Quiz

You may use your TO #2-11 notes on this quiz.   Simplify ALL fractions and change improper fractions to mixed numbers.   Raise your hand when you are finished with the quiz.   Show your score to Mrs. Surratt, then go to www. Firstinmath. Com.


Questions and Answers
  • 1. 

    Which of the following fractions is equivalent to 6/9?

    • A.

      12/16

    • B.

      12/18

    • C.

      18/12

    Correct Answer
    B. 12/18
    Explanation
    To find an equivalent fraction to 6/9, we need to simplify it. Both 6 and 9 are divisible by 3, so we can divide both the numerator and denominator by 3. This gives us 2/3. Looking at the answer choices, the only fraction that is equivalent to 6/9 is 12/18.

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  • 2. 

    Find the LEAST common denominator for 3/4 and 4/5.

    • A.

      9

    • B.

      20

    • C.

      40

    Correct Answer
    B. 20
    Explanation
    The least common denominator is the smallest number that both 4 and 5 can divide evenly into. In this case, the least common denominator for 3/4 and 4/5 is 20, because both 4 and 5 can evenly divide into 20. Therefore, 20 is the correct answer.

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  • 3. 

    1 and 1/8 + 2 and 3/4

    • A.

      3 and 7/8

    • B.

      24/12

    • C.

      3 and 4/12

    Correct Answer
    A. 3 and 7/8
    Explanation
    The given expression represents the addition of two mixed numbers. To add mixed numbers, we first add the whole numbers together, which gives us 3. Then, we add the fractions together. The fractions have the same denominator, so we simply add the numerators together to get 7. The denominator remains the same, which is 8. Therefore, the sum of 1 and 1/8 and 2 and 3/4 is 3 and 7/8.

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  • 4. 

    Find half of 4/6.

    • A.

      4/12

    • B.

      1/3

    • C.

      5/8

    Correct Answer
    B. 1/3
    Explanation
    To find half of 4/6, we divide it by 2. Dividing 4/6 by 2 gives us 2/6, which can be simplified to 1/3. Therefore, the answer is 1/3.

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  • 5. 

    3/8 ÷ 3/4

    • A.

      1/2

    • B.

      9/32

    • C.

      12/24

    Correct Answer
    A. 1/2
    Explanation
    When dividing fractions, we invert the second fraction and multiply it with the first fraction. In this case, we have (3/8) ÷ (3/4). Inverting the second fraction, we get (3/8) * (4/3). Simplifying the multiplication, we get (3 * 4) / (8 * 3), which equals 12/24. Simplifying further by dividing both the numerator and denominator by their greatest common divisor, which is 12, we get 1/2. Therefore, the correct answer is 1/2.

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  • 6. 

    5  ÷  2/5

    • A.

      10/5

    • B.

      2

    • C.

      12 and 1/2

    Correct Answer
    C. 12 and 1/2
    Explanation
    The given expression is 5 ÷ (2/5). To divide by a fraction, we can multiply by its reciprocal. So, we can rewrite the expression as 5 × (5/2). Multiplying 5 by 5 gives us 25, and dividing by 2 gives us 12 and a remainder of 1. Therefore, the answer is 12 and 1/2.

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  • 7. 

       Betty has 3/10 of a pie left over from dinner last night.  She and her brother want to split the left over pie equally.  What fraction of the pie will each one get?

    • A.

      3/20

    • B.

      6/10

    • C.

      3/5

    Correct Answer
    A. 3/20
    Explanation
    Betty has 3/10 of a pie left over from dinner last night. She and her brother want to split the leftover pie equally. To find out what fraction of the pie each one will get, we need to divide the leftover pie equally between two people. Since there are two people, we divide the pie into two equal parts. Dividing 3/10 by 2 gives us 3/20. Therefore, each person will get 3/20 of the pie.

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  • 8. 

    Matthew is saving his allowance to buy a game system for $200.  He has saved 3/5 of the money he needs to purchase the system.  How much money has he saved? 

    • A.

      $40

    • B.

      $120

    • C.

      $160

    Correct Answer
    B. $120
    Explanation
    Matthew has saved 3/5 of the money he needs to purchase the game system. Since the total cost of the game system is $200, 3/5 of $200 is equal to (3/5) * $200 = $120. Therefore, Matthew has saved $120.

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  • 9. 

    2- 4/5 =  Write your answer as a MIXED NUMBER.

    • A.

      1/5

    • B.

      1 and 1/5

    • C.

      6/5

    Correct Answer
    B. 1 and 1/5
    Explanation
    The given fraction 4/5 can be written as a mixed number by dividing the numerator (4) by the denominator (5). The quotient is 0 with a remainder of 4. The whole number part is 0 and the fractional part is 4/5. Therefore, the mixed number representation of 4/5 is 0 and 4/5 which can be simplified to 1 and 1/5.

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  • 10. 

    What is the reciprocal of 9/17?

    • A.

      1

    • B.

      17/9

    • C.

      Neither A or B.

    Correct Answer
    B. 17/9
    Explanation
    The reciprocal of a fraction is obtained by flipping the numerator and denominator. Therefore, the reciprocal of 9/17 is 17/9.

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