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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