Aptitude - Decimals & Fractions Online Quiz


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Following quiz provides Multiple Choice Questions (MCQs) related to Decimals and Fractions. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - (?-0.22)/3.2=3.2

A - 10.46

B - 2.56

C - 7.24

D - 10.02

Answer : A

Explanation

(x-0.22)/3.2=3.2 
=> x-0.22=10.24 
=> x=10.46

Q 2 - (1.13+0.064)/(1.12-0.44+0.162 )=?

A - 1

B - 1.25

C - 1.5

D - 1.75

Answer : C

Explanation

 (1.13+0.064)/(1.1?2-0.44+0.16)        = (1.13+0.43)/(1.12-1.1x0.4+0.42 ) 
= ((1.1+0.4)(1.12-0.44 +0.42))/(1.12-0.44+0.42 ) = 1.5

Q 3 - The greatest of 3/5, 6/5, 9/8, 7/3

A - 7/3

B - 9/8

C - 6/5

D - 3/5

Answer : A

Explanation

3/5=0.6, 6/5=1.2, 9/8=1.12 and 7/3=2.33

Q 4 - If a fraction is multiplied by itself and then divided by the reciprocal of the same fraction, the result is 729/64 , Find the fraction.

A - 5/4

B - 9/8

C - 9/4

D - 9/2

Answer : C

Explanation

(X2)/(1/x) = 729/64
 => X3 = (9/4)3
 => X = 9/4

Q 5 - 15.60 x 0.30 = ?

A - 4.68

B - 0.458

C - 0.468

D - 0.0468

Answer : A

Explanation

 
 Number of decimal places in the product = 2 + 2 = 4. 
 1560 
  x30 
----- 
 0000 
4680x 
----- 
46800 
----- 
 ∴ 15.60 x 0.30 = 4.68 

Q 6 - 0.0169 / 0.013 = ?

A - 0.13

B - 0.013

C - 1.3

D - 3

Answer : D

Explanation

 
 0.0169 / 0.013 = 0.0169/ 0.0130 = 169/130 = 13/10 = 1.3 

Q 7 - 2252.5 / 225? = 225

A - 0.5

B - 1

C - 2

D - 1.5

Answer : D

Explanation

  
 Let 2252.5 / 225x = 225  
 => 225x = 2252.5 / 225  
 => 225x = 2252.5 - 1 = 2251.5 
 => x = 1.5 

Q 8 - (0.87 x 0.87 x 0.87 + 0.13 x 0.13 x 0.13) / (0.87 x 0.87 - 0.87 x 0.13 + 0.13 x 0.13)= ?

A - 0.13

B - 0.73

C - 0.9

D - 1

Answer : D

Explanation

 
 As a3 + b3 = (a+b)(a2-ab + b2) 
 Thus (a3 + b3) / (a2-ab + b2)  = a + b  
 ∴ (0.87 x 0.87 x 0.87 + 0.13 x 0.13 x 0.13) / (0.87 x 0.87 - 0.87 x 0.13 + 0.13 x 0.13) = 0.87 + 0.13 = 1

Q 9 - Which of the following is the largest fraction?

A - 9/13

B - 7/26

C - 28/39

D - 33/52

Answer : C

Explanation

 
 9/13 = 0.692, 7/26 = 0.653, 28/39 = 0.717, 33/52 = 0.634 
 ∴ 28/39 is the smallest fraction.

Q 10 - What is the decimal fraction for 40 ml of a litre?

A - .4

B - .04

C - .05

D - .004

Answer : B

Explanation

   
  Required fraction = 40/1000 = 0.04.


aptitude_decimals.htm

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