Simplification and Approximation is one of the most scoring and time-saving topics in the Quantitative Aptitude section of the IDBI JAM Grade O Exam 2026. These questions are usually straightforward and test a candidate’s calculation speed, accuracy, and ability to apply basic mathematical concepts efficiently.
In this blog, we will cover the importance of this topic, key concepts, types of questions asked, preparation strategy, and practice questions to help you boost your performance.
Download Simplification Questions for IDBI Grade O Exam 2026
In this section, we are providing Simplification Questions. Our experts curate these after analysing previous years’ patterns. Download Now and practice as many questions as you can.
Key Concepts to Prepare
Before solving questions, candidates must be familiar with the following concepts:
- BODMAS rule (Bracket, Order, Division, Multiplication, Addition, Subtraction)
- Squares and cubes (up to at least 30)
- Square roots and cube roots
- Fractions and decimals
- Percentage conversions
- Approximation techniques
Mastering these concepts will significantly improve both speed and accuracy.
Types of Questions Asked
1. Basic Simplification
These questions involve direct calculations using the BODMAS rule.
Example:
48 ÷ 6 × 4 + 5 = ?
Answer: 37
2. Approximation-Based Questions
In these questions, numbers are rounded off to simplify calculations.
Example:
49.8 × 19.9 ≈ ?
Approximate: 50 × 20 = 1000
3. Missing Number Questions
Candidates need to find the missing value in an equation.
Example:
25 × ? = 625
Answer: 25
4. Fraction-Based Simplification
Questions involve fractions and require simplification.
Example:
(3/5) of 250 = 150
5. Square and Cube-Based Questions
These involve recognizing squares, cubes, and their roots.
Example:
√144 = 12
Preparation Strategy
Learn Tables, Squares, and Cubes
Memorize multiplication tables (up to 20) and squares (up to 30). This will reduce calculation time significantly.
Follow BODMAS Strictly
Always apply the BODMAS rule to avoid mistakes in simplification questions.
Practice Approximation Techniques
Learn how to round numbers efficiently without affecting accuracy too much.
Avoid Long Calculations
Look for shortcuts and simplification techniques instead of solving lengthy calculations.
Maintain Accuracy
Since these questions are easy, accuracy should be close to 100%. Avoid careless mistakes.
Practice Questions
Question 1
(24 × 5) ÷ 6 + 8 = ?
Solution:
24 × 5 = 120
120 ÷ 6 = 20
20 + 8 = 28
Answer: 28
Question 2
√225 + 15 × 2 = ?
Solution:
√225 = 15
15 × 2 = 30
Total = 45
Answer: 45
Question 3
(3/4) of 200 + 50 = ?
Solution:
(3/4) × 200 = 150
150 + 50 = 200
Answer: 200
Question 4
49.7 × 9.9 ≈ ?
Solution:
Approximate:
50 × 10 = 500
Answer: 500 (approx.)
Question 5
625 ÷ 25 × 4 = ?
Solution:
625 ÷ 25 = 25
25 × 4 = 100
Answer: 100
Common Mistakes to Avoid
Many candidates lose marks in this section due to simple errors. Some common mistakes include:
- Ignoring the BODMAS rule
- Making calculation errors
- Not approximating correctly
- Taking too much time on easy questions
Avoiding these mistakes can help you maximize your score.
Tips to Improve Speed
- Practice at least 20–30 questions daily
- Use approximation wherever possible
- Avoid pen-and-paper for simple calculations
- Attempt these questions first in the exam
These tips will help you build speed and confidence.
Final Thoughts
Simplification and Approximation is a high-scoring topic that can significantly boost your performance in the IDBI JAM Grade O Exam 2026. With consistent practice and strong fundamentals, you can easily attempt all questions from this topic within a few minutes.
Make sure to include this topic in your daily study plan and regularly attempt mock tests to track your progress. Mastering this section will give you an edge over other candidates and improve your overall score.
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