Aptitude - Decimals & Fractions Online Quiz


Advertisements


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 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 - Find the sum of the largest and the smallest fraction in 3/5, 6/5, 9/8, 7/3

A - 2.53

B - 2.63

C - 2.83

D - 2.93

Answer : D

Explanation

3/5=0.6, 6/5=1.2, 9/8=1.12 and 7/3=2.33
 => sum of largest & smallest fraction is 2.33 + 0.6=2.93

Q 5 - If x - 7328.96 = 5169.38. What is x?

A - 12408.34

B - 12488.34

C - 12498.34

D - 12948.34

Answer : C

Explanation

  
 As x - 7328.96 = 5169.38.   
 Thus x = 5169.38 + 7328.96 
  5169.38   
  7328.96  
 --------   
 12498.34 
 -------- 

Q 6 - 0.9 / 0.75 = ?

A - 1.4

B - 1.8

C - 1.1

D - 1.2

Answer : D

Explanation

 
 0.9 / 0.75 = 0.90/0.75 = 90/75 = 6/5 = 1.2 

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 - (0.07 x 0.07 x 0.07 - 0.05 x 0.05 x 0.05) / (0.07 x 0.07 + 0.07 x 0.05 + 0.05 x 0.05)= ?

A - 0.002

B - 0.02

C - 0.2

D - 2

Answer : B

Explanation

  
 As a3 - b3 = (a-b)(a2-ab + b2)   
 Thus (a3 - b3) / (a2-ab + b2)  = a - b 
 ∴ (0.07 x 0.07 x 0.07 - 0.05 x 0.05 x 0.05) / (0.07 x 0.07 + 0.07 x 0.05 + 0.05 x 0.05) = 0.07 - 0.05 = 0.02

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 - If Najma got 2305.08 Rs as her pocket allowance in year 2004. What was her daily pocket allowance?

A - 6.30 Rs

B - 6.31 Rs

C - 6.32 Rs

D - 6.34 Rs

Answer : A

Explanation

   
  As year 2004 is a leap year. Thus daily allowance = 2305.08 / 366 = 6.30 Rs


aptitude_decimals.htm

Advertisements