Decimal Numbers Quiz Set 005

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Question 1

What is 0.009 × 0.18?

 A

$1.62 × 10^{-3}$.

 B

$1.62 × 10^{-2}$.

 C

$1.62 × 10^{-4}$.

 D

$1.62 × 10^{-1}$.

Soln.
Ans: a

Question 2

What is $3.914 - (-0.8) + 0.09 - (-0.03)$?

 A

+4.834.

 B

-4.834.

 C

+4.348.

 D

-4.348.

Soln.
Ans: a

The given expression is same as $3.914 + 0.8 + 0.09 + 0.03$, then by simple addition we get $3.914 + 0.8 + 0.09 + 0.03 = 4.834$.


Question 3

What is x in $0.001/x = 0.1$?

 A

0.01.

 B

0.1.

 C

1.0.

 D

0.001.

Soln.
Ans: a

The expression becomes $x = {1/1000} × {10}$ = 0.01.


Question 4

What is $3.911 + 0.1 + 0.05$?

 A

4.061.

 B

3.996.

 C

3.975.

 D

4.050.

Soln.
Ans: a

By simple addition we get $3.911 + 0.1 + 0.05 = 4.061$.


Question 5

What is x in ${374/0.0374} = {3.74/x}$?

 A

$3.74 × 10^{-4}$.

 B

$3.74 × 10^{-3}$.

 C

$3.74 × 10^{-5}$.

 D

$3.74 × 10^{-2}$.

Soln.
Ans: a
Transposing, x = $3.74 × {0.0374/374}$ which gives 0.000374, which, in scientific form is $3.74 × 10^{-4}$.

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Creative Commons License
This Blog Post/Article "Decimal Numbers Quiz Set 005" by Parveen (Hoven) is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.
Updated on 2017-04-07.

Posted by Parveen(Hoven),
Aptitude Trainer


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