Quantitative Aptitude

Simplification & Approximation — Free Practice Questions

BODMAS, fractions, decimals, percentages and quick approximation for Prelims.

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Sample questions

Try 4 sample Simplification & Approximation questions

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Q1 · easy

Approximate: (24.98% of 800) + (35.05% of 200) − 49.9 = ?

  1. A210
  2. B220
  3. C200
  4. D180
Explanation

≈ 25% of 800 = 200; 35% of 200 = 70; 200 + 70 − 50 = 220. Closest option = 220.

Q2 · medium

Solve: √2025 + ∛1331 − 18 = ?

  1. A38
  2. B36
  3. C40
  4. D42
Explanation

√2025 = 45; ∛1331 = 11; 45 + 11 − 18 = 38.

Q3 · easy

(3/5) of (5/7) of 1470 = ?

  1. A630
  2. B620
  3. C640
  4. D610
Explanation

1470 × 5/7 = 1050. 1050 × 3/5 = 630.

Q4 · medium

1542 ÷ 6 + 28 × 5 − 197 = ?

  1. A200
  2. B198
  3. C210
  4. D196
Explanation

1542/6 = 257; 28×5 = 140; 257 + 140 − 197 = 200.

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