Speed Maths Tricks for Bank Exams Quant Section Preparation

Cracking banking exams such as IBPS Clerk/PO, SBI Clerk/PO, RBI Assistant, or IDBI JAM requires not just accuracy but also speed in solving quantitative aptitude questions. Time is the most critical factor, and without shortcuts, even simple calculations can eat up precious minutes. Here’s a comprehensive guide to mastering speed maths tricks to boost your performance.

Speed Maths Tricks for Bank Exams Quant Section

In banking exams, the Quantitative Aptitude section can be a make-or-break factor, as it tests both accuracy and speed. With limited time and a wide range of topics, relying solely on traditional methods can slow you down. Speed maths tricks are essential shortcuts that help solve calculations faster, minimize errors, and maximize your score.

1. Shortcut Tricks for Multiplication:

• Two-digit multiplication: Use the formula (a+b) (a-b) = a² – b² for numbers close to each other.
• Multiplying by 11: Sum the digits and place it in between. Example: 23 × 11 = 2 (2+3) 3 = 253.
• Cross multiplication: For two-digit × two-digit numbers, break them into tens and units to simplify.

2. Tricks for Division

• Divisibility rules: Quickly identify divisible numbers (2, 3, 4, 5, 9, 11).
• Remainder shortcut: Use modular arithmetic for remainder questions.

3. Quick Calculation of Percentages

• Convert percentages to fractions: 25% = 1/4, 12.5% = 1/8, 50% = 1/2.
• Use increase/decrease shortcut: Final = Original × (100 ± %)/100.

4. Simplifying Square and Cube Roots

• Memorize squares up to 50² and cubes up to 20³.
• For numbers near known squares: (n + x)² = n² + 2nx + x².

5. Speedy Calculation of Profit & Loss, Simple & Compound Interest

• Profit/Loss: Direct formula Profit% = (Profit ÷ Cost Price) × 100.
• Simple Interest: SI = (P × R × T)/100.
• Compound Interest: Shortcut for annual CI: A = P(1 + R/100)^T and approximate for quick calculation.

6. Tricks for Time, Speed & Distance

• Use the formula Distance = Speed × Time smartly; avoid decimal calculations.
• Shortcut for average speed: Average speed = 2 × S1 × S2 / (S1 + S2).

7. Simplifying Ratio & Proportion Problems

• Convert ratios to fractions for easier calculation.
• Cross multiply to avoid multiple-step calculation.

8. Percentages and Fractions (Fractional Equivalents)

This is perhaps the most powerful trick for fast calculation. Memorizing common fraction-to-percentage conversions allows you to replace complex multiplications and divisions.

9. Approximations and Rounding Off

• Round numbers to nearest tens/hundreds to quickly estimate.
• Use approximation in large number calculations to save time.

10. Tricks for Algebra & Quadratic Equations

• Factorization shortcuts: x² + (a+b) x + ab = (x+a) (x+b).
• Quadratic roots shortcut using Vieta’s formulas for sum and product of roots.

11. Practice Mental Math

• Regular practice of tables, squares, cubes, and simple percentages.
• Daily speed drills can reduce calculation time drastically.

Why Speed Maths is Crucial in Bank Exams

• Time-bound nature: Most bank exams allot 35–40 minutes for 35–40 Quant questions in prelims.
• High competition: Every second saved allows you to attempt more questions correctly.
• Reduces calculation errors: Quick tricks minimize repetitive steps and human errors.
• Improves confidence: Faster calculations reduce stress during the exam.