Banking (IBPS / SBI) · Quantitative Aptitude

Simplification & Approximation

15 practice questions with full step-by-step solutions, plus a concept-first explainer — free, no sign-up.

Read the explainer · 7 minPractise · 15 questions

What you'll learn

A friendly, exam-ready guide to Simplification and Approximation for IBPS and SBI bank prelims. Master the BODMAS order, smart rounding, and the fraction tricks that turn tricky-looking sums into 30-second free marks — with worked examples throughout.

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This chapter has

5
easy
8
medium
2
hard

Simplification & Approximation — solved practice questions

8 Banking Quantitative Aptitude questions with step-by-step solutions. Attempt each, then reveal the answer.

  1. Q1easy

    Simplify: 15% of 480 + 25% of 320

    • A148
    • B152
    • C156
    • D160
    Show answer & solution

    Correct answer: (B) 152

    15% of 480 = 72 and 25% of 320 = 80; their sum is 72 + 80 = 152.

  2. Q2easy

    Simplify: 45 × 12 ÷ 6 + 18

    • A98
    • B102
    • C108
    • D112
    Show answer & solution

    Correct answer: (C) 108

    Following order of operations: 45 × 12 = 540, 540 ÷ 6 = 90, and 90 + 18 = 108.

  3. Q3medium

    Simplify: √1764 + √2025

    • A87
    • B85
    • C89
    • D83
    Show answer & solution

    Correct answer: (A) 87

    √1764 = 42 and √2025 = 45, so the sum is 42 + 45 = 87.

  4. Q4medium

    Find the value: 3/5 of 2/3 of 1350

    • A500
    • B520
    • C560
    • D540
    Show answer & solution

    Correct answer: (D) 540

    2/3 of 1350 = 900, and 3/5 of 900 = 540.

  5. Q5easy

    Find the approximate value: 24.98% of 1599.9

    • A380
    • B400
    • C420
    • D440
    Show answer & solution

    Correct answer: (B) 400

    Rounding to 25% of 1600 gives 0.25 × 1600 = 400.

  6. Q6medium

    Simplify: 18² − 12²

    • A160
    • B170
    • C180
    • D190
    Show answer & solution

    Correct answer: (C) 180

    Using a² − b² = (a + b)(a − b) = 30 × 6 = 180 (or 324 − 144 = 180).

  7. Q7medium

    Simplify: 1225 ÷ 35 + 15²

    • A260
    • B250
    • C270
    • D240
    Show answer & solution

    Correct answer: (A) 260

    1225 ÷ 35 = 35 and 15² = 225, so 35 + 225 = 260.

  8. Q8medium

    Simplify: 7/8 + 3/4 − 5/8

    • A1/2
    • B3/4
    • C7/8
    • D1
    Show answer & solution

    Correct answer: (D) 1

    Converting to eighths: 7/8 + 6/8 − 5/8 = 8/8 = 1.

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