📘 BANK EXAM SPEED MATHS – PAGE 5

🔹 Approximation & Simplification Tricks

Approximation questions are very common in bank exams. These questions test your ability to quickly estimate values instead of performing exact calculations. With proper techniques, you can solve them within a few seconds.

✅ Trick 1: Rounding Method

Concept: Round numbers to nearest easy values (10, 50, 100).

Example: 498 × 19 ÷ 21

• 498 ≈ 500
• 19 ≈ 20
• Calculation: (500 × 20) ÷ 21
• = 10000 ÷ 21 ≈ 476

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✅ Trick 2: Use Compatible Numbers

Concept: Adjust numbers to make division easy.

Example: 798 ÷ 19

• 798 ≈ 760
• 760 ÷ 19 = 40

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✅ Trick 3: Simplification Using BODMAS Smartly

Concept: Solve division and multiplication first, but simplify wherever possible.

Example: 48 × 25

• 25 = 100 ÷ 4
• 48 × 100 ÷ 4
• = 4800 ÷ 4 = 1200

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✅ Trick 4: Close Number Adjustment

Example: 999 × 51

• 999 ≈ (1000 − 1)
• = 1000 × 51 − 51
• = 51000 − 51 = 50949

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🔹 Practice Questions

1. 202 × 49 ≈ ?
2. 798 ÷ 19 ≈ ?
3. 49 × 18 ≈ ?
4. 999 × 51 ≈ ?
5. 503 × 21 ÷ 19 ≈ ?
6. 48 × 99 ≈ ?

🔹 Exam Tips

✔ Approximation questions should be solved within 5–7 seconds
✔ Always round numbers smartly (not randomly)
✔ Focus on closest option instead of exact answer
✔ Practice daily to improve estimation accuracy

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