Simplification and Approximation for LIC AAO 2025, Download PDF

Simplification and Approximation are one of the most asked topics in the Quantitative Aptitude section of LIC AAO Prelims exam. These topic concepts form the base to understand other quant topics. Every year, 3 to 5 questions are asked from this topic in the form of mathematical calculations and are also included in the Data Interpretation topic. Many aspirants who have improved their calculation speed in solving questions from this topic have cleared the exam. If you also want to crack the LIC AAO exam this year, you should try to solve different types of simplification and approximation questions. In this blog, we are providing a free downloadable PDF of Simplification and Approximation Questions with solutions for LIC AAO 2025 exam.

What are Simplification and Approximation Questions in LIC AAO?

Simplification questions are complex mathematical expressions to be converted into a simple form. The BODMAS rule is used to solve them. Approximation questions are also expressions, but you are asked to find the approximate value after solving the expression (not the exact value). To solve them, you need to learn quick maths techniques, tables up to 30, quick calculations, square roots and cube roots, decimals, fractions, unit digit, squares and cubes of the given number, and basic knowledge of the number system. Practice is the only way to improve your speed in solving such questions. You can practice using PracticeMock topic tests. Thus, simplification and approximation questions test your basic understanding of the mathematical calculations and prepare you to tackle other quant topics. 

Types of Simplification and Approximation Questions Asked in LIC AAO Exam

There are two types of Simplification and Approximation questions, which are generally asked in exams like LIC AAO. One is a Direct equation type, and the other is a Missing number type problem. In the Direct equation type question, you are asked to solve the given expression. In the missing number problem, one number is missing from the equation. You need to calculate the equation such that you find a suitable number to fit in the equation given to you. 

• Direct Equation Type: Solve the equation and derive the correct answer. 
• Missing Number Type: Find missing number in the given equation. (Answer is given)

Sample Questions with Free Downloadable PDF 

Try to solve the questions using a timer and it should not take more than 1 minute to solve 2 questions. When you solve 2 questions in 1 minute, it is most probable that you will maintain that speed in the exam. Solve the question given below and download the pdf which contains 10 questions with detailed solutions. 

Question 1: What will come in the place of question mark (?) in the given expression?

? = 28 × 20 + 532 ÷ 28 – 18 × 30

A) 35

B) 39

C) 47

D) 49

E) None of these

Question 2: What will come in the place of question mark (?) in the given expression?

15 × 16 + ? × 12 – 24 × 9 = 8 × 27

A) 14

B) 7

C) 16

D) 12

E) None of these

Question 3: What will come in the place of question mark (?) in the given expression?

25% of 800 – 12% of 650 = 20% of ?

A) 610

B) 460

C) 720

D) 550

E) None of these

Question 4: What will come in the place of question mark (?) in the given expression?

√729 + 21² – 4³ = ? + 15²

A) 142

B) 158

C) 165

D) 179

E) None of these

Question 5: What will come in the place of question mark (?) in the given expression?

(√1156 × 25) ÷ 17 + 11²= ?

A) 187

B) 182

C) 161

D) 167

E) None of these

Simplification and Approximation Questions for LIC AAO – Download PDF

Tips to Solve Simplification and Approximation Questions Quickly

The only way to solve simplification and approximation questions quickly in the exam is to practice more questions on a daily basis. Also, if you want to solve these type of questions within seconds, you should memorize tables upto 30, squares upto 30, cubes upto 20, and basic calculation shortcuts. Approximation techniques like rounding off the number if the number after the decimal point is greater than 5. (example – 7.596 ~ 7.6 and 8.99 ~ 9.0).

• Memorize Multiplication Table: Memorizing multiplication table upto 50 will help you in many ways while solving an equation. 
• Learn Squares, Cubes, Square roots, and Cube roots: Learning squares and cubes and their roots will eventually benefit you in easy calculation.
• Learn Quick Addition, Subtraction, Multiplication, and Division: When you are able to do quick maths, you can answer within seconds. Try to solve the question without using a pen or paper. This way you lean to do quick calculations on your fingertip.
• Improve Calculation Speed through practice: Practice is essential to improve your speed in solving questions from this topic.

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