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 - (0.34-0.24) / (0.32+0.22)

A - 0.05

B - 0.5

C - 0.1

D - 0.09

Answer : A

Explanation

(0.34-0.24) / (0.32+0.22) => (a4-b4) / (a2+b2) = ( a2+b2)( a2-b2)/( a2+b2)
 = a2-b2 
 =(a+b)(a-b) 
 = (0.3 +0.2)(0.3-0.2) = 0.05 

Q 2 - (0.012+0.0012)/0.0001 + 0.01=?

A - 1.00

B - 1.02

C - 1.04

D - 1.06

Answer : A

Explanation

 (0.012+0.0012)/0.0001 + 0.01 
=(0.0001-0.000001)/0.0001 + 0.01 = 0.99 + 0.01 = 1.00

Q 3 - The decimal 0.024 in the fraction form is

A - 24/100

B - 24/1000

C - 24/500

D - 24/10

Answer : B

Explanation

0.024  = 24/1000

Q 4 - If 1/6th part of a number is 150 more than 1/9th part of that number, then the number is?

A - 2100

B - 2400

C - 2500

D - 2700

Answer : D

Explanation

 Let the number be X.
 Thus 1/6X- 1/9X=150
 =>(3X-2X)/18=150
 =>X=2700

Q 5 - 27.06 x 25 - x = 600. What is x?

A - 66.5

B - 66.75

C - 76.3

D - 76.5

Answer : D

Explanation

 
 27.06 x 25 - x = 600 
 => x = 27.06 x 25 - 600 
 => x = 676.50 - 600  = 76.5 

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 - If 80.40 / 20 -(-4.2) = x. What is x?

A - 497.8

B - 5.786

C - 947

D - 8.22

Answer : D

Explanation

    
 80.40 / 20 -(-4.2) = 4.02 + 4.2 = 8.22. 

Q 8 - (.896 x .752 + .896 x .248) / (.7 x .034 + .7 x .966)= ?

A - 1.28

B - .976

C - 12.8

D - 9.76

Answer : A

Explanation

 
(.896 x .752 + .896 x .248) / (.7 x .034 + .7 x .966) 
 = {.896 x(.752 + .248)} / {.7 x(.034 + .966)} 
 = (.896 x 1) / (.7 x 1) 
 = 896/700 = 128/100 = 1.28 

Q 9 - 25.7322 - 15.7322 = ?

A - 4.1464

B - 41.464

C - 414.64

D - 4146.4

Answer : C

Explanation

 
 25.7322  - 15.7322 = (25.732 + 15.732)(25.732 - 15.732) = 41.464 x 10 = 414.64 

Q 10 - If a tank gets filled by 18 buckets of water where capacity of each bucket is 9 litres. How many buckets are required to fill the same tank if its capacity is 13.5 litres?

A - 12

B - 13.5

C - 24

D - 25

Answer : A

Explanation

   
  tank capacity = 18 x 9 = 162 litres 
 required number of buckets = 162 / 13.5 = 162 x 2/27 = 12. 


aptitude_decimals.htm

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