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8th Class Mathematics Rational Numbers Question Bank Rational Numbers

  • question_answer
    What should be subtracted from \[\left( \frac{3}{4}-\frac{2}{3} \right)\]to get\[\frac{-1}{6}\]?

    A)  \[-\frac{6}{13}\]                   

    B)  \[\frac{1}{4}\]           

    C)  \[\frac{2}{7}\]                       

    D)         \[-\frac{1}{8}\]         

    Correct Answer: B

    Solution :

    Let the required number be x. Then, \[\left( \frac{3}{4}-\frac{2}{3} \right)-x=-\frac{1}{6}\] \[\Rightarrow x=\left( \frac{3}{4}-\frac{2}{3} \right)+\frac{1}{6}=\frac{9-8+2}{12}=\frac{3}{12}=\frac{1}{4}\] \[\therefore \] Required number \[=\frac{1}{4}\]


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