Decimal Numbers Quiz Set 006

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Question 1

What is $6.845 - (-0.1) + 0.04 - (-0.08)$?

 A

7.065.

 B

8.065.

 C

6.065.

 D

9.065.

Soln.
Ans: a

The given expression is same as $6.845 + 0.1 + 0.04 + 0.08$, then by simple addition we get $6.845 + 0.1 + 0.04 + 0.08 = 7.065$.


Question 2

What is $0.59646/0.006$?

 A

99.41.

 B

994.1.

 C

9.941.

 D

0.9941.

Soln.
Ans: a

The given expression can be written as ${59646/6} × {1000/100000}$ which is same as ${59646/6} × {1/100}$, which is same as $9941 × {1/100}$, which is same as 99.41


Question 3

For what value of x would this expression be a perfect square: $6.16 × 6.16 - x × 6.16 + 0.3 × 0.3$?

 A

0.6.

 B

0.06.

 C

0.0006.

 D

6.0.

Soln.
Ans: a

Comparing the given expression with $a^2 - 2 × a ×b + b^2 = (a - b)^2$, we see that if a = 6.16, and b = 0.3 then by inspection, x should be equal to 2b = 2 × 0.3 = 0.6.


Question 4

If $7.06/0.9$ = 7.844444, then $0.0706/9$ = ?

 A

0.007844444.

 B

0.07844444.

 C

0.7844444.

 D

7.844444.

Soln.
Ans: a

Numerator is divided by 100, and denominator multiplied by 10, so the answer should get divided by 1000.


Question 5

What is $0.013896/0.02$?

 A

0.6948.

 B

6.948.

 C

0.06948.

 D

0.006948.

Soln.
Ans: a

The given expression can be written as ${13896/2} × {100/1000000}$ which is same as ${13896/2} × {1/10000}$, which is same as $6948 × {1/10000}$, which is same as 0.6948


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Creative Commons License
This Blog Post/Article "Decimal Numbers Quiz Set 006" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2017-05-17.

Posted by Parveen(Hoven),
Aptitude Trainer


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