# Approximation MCQ Questions Online Test - Aptitude & Math

Approximation is the one of the important topic in Aptitude for All types of competitive exams. In this section you will get 200+ Approximation MCQ Questions in Online test format. Questions are very Unique and prepared by math experts.

In mathematics, approximation is used to simplify complex expressions or to solve equations that cannot be solved exactly. For example, it can be used to find the value of pi (π) to a certain number of decimal places, or to approximate the square root of a number.

It is important to note that approximation is not always the best approach, especially when the error in the estimate could have significant consequences. In such cases, it is better to use more accurate methods, even if they take more time or require more resources.

In conclusion, approximation is a valuable tool that can be used to simplify complex problems and find solutions quickly and efficiently. Whether in mathematics, engineering, finance, or physics, the ability to approximate accurately is a key skill that can help you solve problems more effectively.

Some Approximation MCQ Questions and Online Test for Your Upcoming Exams.

Question-1)

Estimate the value of the expression: \$(3.14 × 7^3) / (54 × 8^2)\$

Solution:

We can simplify the expression by approximating some of the numbers:

We can approximate 3.14 as 3.
We can approximate \$7^3\$ as 7 x 7 x 7 = 343
We can approximate 54 as 50
We can approximate \$8^2\$ as 8 x 8 = 64
With these approximations, the expression becomes:

\$(3 × 343) / (50 × 64) = 1029 / 3200 = 0.32\$

So the approximate value of the expression is 0.32.

Question-2)

Estimate the value of the expression: \$(15 × 6^2) / (30 × 5^3)\$

Solution:

We can simplify the expression by approximating some of the numbers:

We can approximate \$6^2\$ as 6 x 6 = 36
We can approximate 30 as 25
We can approximate \$5^3\$ as 5 x 5 x 5 = 125
With these approximations, the expression becomes:

\$(15 × 36) / (25 × 125) = 540 / 3125 = 0.172\$

So the approximate value of the expression is 0.172.

Question-3)

Estimate the value of the expression: \$(13 × 9^2) / (27 × 8^3)\$

Solution:

We can simplify the expression by approximating some of the numbers:

We can approximate \$9^2\$ as 9 x 9 = 81
We can approximate 27 as 25
We can approximate \$8^3\$ as 8 x 8 x 8 = 512
With these approximations, the expression becomes:

\${(13 × 81)} / {(25 × 512) }= 1053 / 12800 = 0.082\$

So the approximate value of the expression is 0.082.

I hope these examples help you prepare for an approximation aptitude test.

### Approximation Practice Test Online Test - 1 (Approximation) TAKE TEST Number of questions : 20  |  Time : 30 minutes Online Test - 2 (Approximation) TAKE TEST Number of questions : 20  |  Time : 30 minutes Online Test - 3 (Approximation) TAKE TEST Number of questions : 20  |  Time : 30 minutes
• Simplification
• Simple Interest
• Compound Interest
• Averages
• Profit and Loss
• Time and Work
• Time and Distance
• Problems on Trains
• Number System
• Percentage
• Partnership
• Simple Equations
• Ratio and Proportion
• Probability
• Data Interpretation
• Geometry
• Fraction
• LCM and HCF
• Discount
• Approximation
• Area And Perimeter
• Mensuration
• Work and wages
• Chain Rule
• Pipes and Cistern
• Races and games
• Stocks and Shares
• Problems on Ages
• Unitary Method
• Sets and Functions