Aptitude - Questions & Answers

Aptitude - Decimals & Fractions Online Quiz

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.

Q 1 - 3.56 x 0.234

Answer : A

Explanation

356 x 0.00234

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

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 decimal 0.024 in the fraction form is

Answer : B

Explanation

0.024  = 24/1000

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.

Answer : C

Explanation

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

Q 5 - 0.6 + .66 + .066 + 6.606 =?

Answer : C

Explanation

 0.6 
 0.66  
 0.066  
 6.606  
 -----  
 7.932  
 -----

Q 6 - 8^0.28 x 4^0.08 = ?

Answer : C

Explanation

 Given expression is (2³)^0.28 x (2²)^0.08 
 = 2^{(3 x 0.28)} x 2^{(2 x 0.08)} 
 = 2^{(0.84 + 0.16)} 
 = 2¹ 
 = 2

Q 7 - If 0.13 / x² = 13. What is x?

Answer : C

Explanation

   
 0.13 / x² = 13 
 => 13x² = 0.13 
 => x² = 0.13/13 = 13/100 x 1/13 = 1/100 
 => x = 1/10 = .1

Q 8 - (2.3³ - 0.027) / (2.3² + 0.69 + 0.09)= ?

Answer : B

Explanation

 
 As a³ - b³ = (a-b)(a²-ab + b²) 
 Thus (a³ - b³) / (a²-ab + b²)  = a - b  
 ∴ (2.3³ - 0.027) / (2.3² + 0.69 + 0.09) 
 = (2.3³ - 0.03³) / (2.3² + 2.3 x 0.3 + 0.3²) = 2.3 - 0.3 = 2

Q 9 - 25.732² - 15.732² = ?

Answer : C

Explanation

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

Q 10 - If 1 litre of water weighs 1 kg. How many cubic millimeters of water will weigh .1 gm?

Answer : D

Explanation

   
  1000 gm is weight of 1000 cubic millimeter of water. 
 => 1 gm is weight of 1 cubic centimeter = 1000 cubic millimeters of water 
 1/10 gm is weight of 1000 x 1/10 = 100 cubic millimeter of water.

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