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Ans. Approximation in IBPS RRB exams refers to the technique of rounding off numbers and simplifying complex calculations to arrive at a close but not exact answer quickly. This helps in managing time effectively during the exam.
Q2. Why is Approximation important in Banking Exams?
Ans. Approximation is important because it allows candidates to solve problems faster, which is crucial in a timed exam. It helps in simplifying complex arithmetic operations and can be used to verify the reasonableness of answers quickly.
Q3. In which sections of banking exams is Approximation used?
Ans. Approximation is primarily used in the Quantitative Aptitude section, particularly in: Simplification/Approximation questions Data Interpretation (DI) Arithmetic problems involving large numbers, percentages, and averages.
Q4. How many Approximation questions are generally asked in banking exams?
Ans. The number of approximation questions can vary, but typically, you may encounter around 5-10 questions in the Quantitative Aptitude section of exams like IBPS RRB PO and Clerk.
Q5. What are some common Approximation techniques?
Ans. Common approximation techniques include: Rounding off numbers to the nearest ten, hundred, or thousand Using significant figures Simplifying fractions and percentages Estimating multiplication and division results.
Q6. How can I practice Approximation for Banking exams?
Ans. You can practice approximation by: Solving previous years' question papers Taking mock tests that include approximation questions Practicing with a variety of approximation problems to build speed and accuracy.
Q7. Are there specific approximation questions in every banking exam?
Ans. Most Banking exams include approximation questions, especially in the Quantitative Aptitude section. However, the exact number and format may vary each year and between different exams.
Approximation Questions for IBPS RRB Exam, Solved Problems
Approximation Questions in the IBPS RRB Exam test candidates' ability to quickly estimate values and simplify calculations without needing exact answers. We have provided here the questions asked in the previous year, tricks, and solved examples.
Praveen Kushwah30 May, 2025
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Approximation is a mathematical technique used to simplify complex calculations by finding values that are close to the exact numbers. This technique is especially useful in competitive exams like banking exams, where time is limited and quick calculations are essential.
Approximation Questions include operations like addition, subtraction, multiplication, division, percentages, squares, square roots, and sometimes involve BODMAS (order of operations).
Approximation Questions in IBPS RRB Exam
Approximation questions are a key part of the Quantitative Aptitude section in the IBPS RRB exam for Probationary Officer and Clerk Posts, designed to test a candidate’s ability to quickly estimate numerical values to save time during the exam. These questions typically involve rounding off numbers and performing simplified arithmetic operations such as addition, subtraction, multiplication, division, percentages, and square roots to arrive at an approximate answer rather than an exact one.
Importance of Approximation in Banking Exams
Time Efficiency: Approximations allow you to solve problems faster by simplifying calculations. This is important in bank exams where time management is a significant factor.
Simplifying Complex Calculations: It helps in breaking down complex arithmetic operations into more manageable steps.
Checking Reasonableness of Answers: Approximation can be used to quickly verify if an answer is reasonable, which is useful for multiple-choice questions.
Approximation Questions Tricks
1. Rounding Off Numbers:
Round off numbers to the nearest ten, hundred, or thousand to simplify addition, subtraction, multiplication, and division.
For example, rounding 498 to 500 or 1523 to 1500.
2. Using Significant Figures:
Retain a few significant digits and drop less significant ones to simplify calculations.
For example, approximating 123.456 to 123.5 or 0.004567 to 0.00457.
3. Multiplication and Division by Powers of 10:
Simplify calculations by multiplying or dividing by powers of 10.
For example, 423 × 99 can be approximated as 423 × 100 = 42300 and then subtract 423 (42300 - 423 = 41877).
4. Using Common Fractions:
Convert complex fractions into simpler ones.
For example, instead of using 0.3333, use 1/3, or instead of 0.142857, use 1/7.
Weightage of Approximation Questions
You can expect 5 to 10 approximation questions in every bank exam especially in the prelims phase.
These questions are quite easy to solve if you have practiced well on your calculation speed.
You can solve all the questions within 3 to 4 minutes with 100% accuracy.
These questions can increase your chances of clearing the exam.
Approximation Solved Examples
Addition/Subtraction:
Approximate 674 + 289. Round off to 670 + 290 = 960.
Multiplication:
Approximate 47 × 19. Round off to 50 × 20 = 1000.
Division:
Approximate 635 ÷ 48. Round off to 640 ÷ 50 = 12.8.
Percentage Calculations:
Calculate 32% of 249. Round off 32% to 30% and 249 to 250, giving 30% of 250 = 75.
BODMAS Rule in Approximation
The BODMAS rule (Brackets, Orders, Division and Multiplication, Addition and Subtraction) is essential for solving mathematical expressions accurately. When applying the BODMAS rule in approximation, the goal is to simplify complex expressions while still adhering to the correct order of operations. Here’s how you can apply the BODMAS rule effectively in approximation:
