Hoja De Trabajo 7° Grado

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| By Troy Wesson
T
Troy Wesson
Community Contributor
Quizzes Created: 3 | Total Attempts: 637
Questions: 5 | Attempts: 124

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Hoja De Trabajo 7° Grado - Quiz

Suma de Fracciones


Questions and Answers
  • 1. 

    Sumar 2/3 - 3/5 + 2/15

    • A.

      1/5

    • B.

      3/15

    • C.

      5/3

    • D.

      1/5

    Correct Answer
    A. 1/5
    Explanation
    The given expression represents the sum of three fractions. To add fractions, we need to find a common denominator. In this case, the common denominator is 15. So, we convert each fraction to have a denominator of 15. The first fraction becomes 10/15, the second fraction becomes 9/15, and the third fraction becomes 2/15. Then, we add these fractions together. 10/15 + 9/15 + 2/15 = 21/15. Simplifying this fraction, we get 7/5, which is equivalent to 1/5. Therefore, the correct answer is 1/5.

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  • 2. 

    2/6 + 3/9 - 9/27

    • A.

      1/3

    • B.

      2/9

    • C.

      2/3

    • D.

      5/6

    Correct Answer
    A. 1/3
    Explanation
    The given expression involves adding and subtracting fractions. To add or subtract fractions, we need to have a common denominator. In this case, the common denominator is 9. So, we rewrite the fractions with the common denominator: 4/9 + 1/3 - 1/3. The denominators are now the same, so we can simply add the numerators: 4 + 1 - 1 = 4. The denominator remains the same, so the result is 4/9.

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  • 3. 

    -1/12 + 5/6 - 3/24Which one do you like?

    • A.

      5/8

    • B.

      5/6

    • C.

      5/12

    • D.

      3/10

    Correct Answer
    A. 5/8
    Explanation
    The given expression involves adding and subtracting fractions. To simplify the expression, we need to find a common denominator for all the fractions. The common denominator for 12, 6, and 24 is 24. Converting each fraction to have a denominator of 24, we get -2/24 + 20/24 - 3/24. Combining the numerators, we have 15/24, which can be simplified to 5/8. Therefore, the correct answer is 5/8.

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  • 4. 

    3/7 - 4/21 + 25/42

    • A.

      2/3

    • B.

      - 5/6

    • C.

      - 2/7

    • D.

      5/6

    Correct Answer
    D. 5/6
    Explanation
    The given expression involves adding and subtracting fractions. To solve it, we need to find a common denominator for the fractions involved. In this case, the common denominator is 42. When we convert each fraction to have a denominator of 42, we get 18/42 - 8/42 + 25/42. Simplifying this expression gives us 35/42, which can be further simplified to 5/6. Therefore, the correct answer is 5/6.

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  • 5. 

    3/8 - 5/16 + 3/2 - 5/4

    • A.

      1/8

    • B.

      5/16

    • C.

      - 3/8

    • D.

      3/4

    Correct Answer
    B. 5/16
    Explanation
    The given expression involves adding and subtracting fractions. To solve it, we need to find a common denominator for all the fractions involved. The common denominator in this case is 16. By converting all the fractions to have a denominator of 16, we get (6/16) - (5/16) + (24/16) - (20/16). Simplifying this expression gives us 5/16. Therefore, the correct answer is 5/16.

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