• Approximation questions

    Direction : find the approximate value will come in place of the question mark ( ? ) in the following .


    1. 750. 11 of ? % × 34.90 + 6.995 = 30000
    A. 100
    B. 80
    C. 35
    D. 75


    2.  360 . 2 of 40.1 % + ? × 58. 98 % = 1244
    A. 1800
    B. 1840
    C. 1865
    D. 1870
    E. 1900


    3.  96 . 894 + 33.002 + 15.02 × 7.99 = ?
    A. 180
    B. 123
    C. 140
    D. 250
    E. 170


    4. (  42.11 × 5.006 )  - √ 17 × 15.08 = ?
    A. 250
    B. 150
    C. 45
    D. 200
    E. 125




    5.  7441 ÷ 34 × 12 = ? × 9 + 110
    A. 420
    B. 280
    C. 590
    D. 350
    E. 220

    Answer : 

    1. A


    Solution :  750 . 11 of ? % × 34.90 + 6.995 = 30000                     ? /100 × 750 × 35 + 7 = 30000
                         ? / 2 × 75 × 7  = 30000 -7
                   ? = 29993 × 2 / 75 × 7  = 59986 / 525
                 ? = 114 . 25 = 100

    2. C


    Solution :  360 .2 of 40.1 % +  ? of 58 . 98 % = 1244
    =   360 of 40 % + ? of 59 % = 1244
    =   360 × 40 / 100 + 59 / 100 × ? = 1244
      =   59 / 100 × ? = 1244 - 144 = 1100
       ?  = 1100 × 100 / 59 = 11000 / 59 = 1864. 406
        ? = 1865



    3. D

    Solution :

      ? = 96. 894 + 33. 002 + 15.02 × 7.99   ? = 97 + 33 + 15 × 8
      ? = 130 + 120 = 250

    4. B

    Solution : 

    ? = ( 42.11 × 5.006 ) - √ 17 × 15.08
    ? =  ( 42 × 5 ) - √ 16 × 15
    ? = 210 - 4 × 15
    ? = 210 - 60
    ? = 150

    5. B

    Solution :


    7741 ÷ 34 × 12 = ? × 9 + 110
    ? × 9 + 110 = 7741 / 34 × 12
    ? × 9 + 110 = 219 × 12
    ? = 280














          

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