Aptitude - Decimals & Fractions Online Quiz



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 - (0.46-0.046)/(0.0046/46)=?

A - 0.414

B - 0.0414

C - 414

D - 4140

Answer : D

Explanation

(0.46-0.046)/(0.0046/46)= 0.414/(1/10000) 
= 4140

Q 2 - 31.2 x 0.6 =

A - 18.72

B - 18.85

C - 19.02

D - 19.08

Answer : A

Explanation

 31.2 x 0.6=(312/10)x(6/10)=1872/100=18.72

Q 3 - (0.036-0.018)/(0.0036/36)=?

A - 2

B - 6

C - 12

D - 18

Answer : D

Explanation

(0.036-0.018)/(0.036/36)=   (36/1000-18/1000)/(36/1000) x36=((36-18)/1000)/(36/1000) x36=18/36 x36=18

Q 4 - How many digits are there to the right of decimal in the product of 32.182x36.42?

A - 6

B - 5

C - 4

D - 3

Answer : B

Explanation

 32.182x36.42 = 32182/1000 x 3642/100 =32182x3642x10-5
 =&t; 5 decimals 

Q 5 - 1 + .1 + .01 + .001 =?

A - 1.001

B - 1.011

C - 1.003

D - 1.111

Answer : D

Explanation

 1.000 
 0.1 
 0.01 
 0.001 
 ----- 
 1.111 
 ----- 

Q 6 - 12.1 / 19.8 = ?

A - 7/9

B - 11/18

C - 13/17

D - 11/19

Answer : B

Explanation

 
 12.1/19.8 = 121/198 = 11/18. 

Q 7 - .000033 / 0.11 = ?

A - 0.003

B - 0.03

C - 0.0003

D - .3

Answer : C

Explanation

 
 .000033 / 0.11 = .0033/11 = .0003 

Q 8 - (0.733 + 0.273) / (0.732 + 0.272 - 0.73 x 0.27)= ?

A - 1

B - 0.4827

C - .73

D - 6

Answer : A

Explanation

 As a3 + b3 = (a+b)(a2-ab + b2)    
 Thus (a3 + b3) / (a2-ab + b2)  = a + b  
 ∴ (0.733 + 0.273) / (0.732 + 0.272 - 0.73 x 0.27) = 0.73 + 0.27 = 1

Answer : C

Explanation

 
 0.535353 = 53/99 

Q 10 - If a tailor has 37.5 m of cloth and he has to make 8 pieces out of meter of it. How many pieces can be made?

A - 320

B - 360

C - 300

D - 420

Answer : C

Explanation

 
Required pieces = 37.5 x 8 = 300 
aptitude_decimals.htm
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