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RBI Grade B Simplification & Approximation Questions with Answers & Explanations

19 Simplification & Approximation questions from the Quantitative Aptitude section of RBI Grade B, each with the correct answer and a worked explanation. Try each question first, then tap Show answer to check. When you're ready, take the timed chapter-wise test to see your all-India rank.

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Question 1

What approximate value should come in place of (?) 39.97% of 179.97 + 36.01 × 25.97 = ?

  1. A908
  2. B1108
  3. C1068
  4. D1008
  5. E948
Show answer
Answer: (D) 1008 ≈ 40% of 180 + 36 × 26 = 72 + 936 = 1008.
Question 2

What approximate value should come in place of (?) 60.04% of 120.04 + 28.98 × 13.02 = ?

  1. A449
  2. B369
  3. C409
  4. D489
  5. E349
Show answer
Answer: (A) 449 ≈ 60% of 120 + 29 × 13 = 72 + 377 = 449.
Question 3

What approximate value should come in place of (?) 24.98% of 580.04 + 19.02 × 28.01 = ?

  1. A737
  2. B577
  3. C677
  4. D757
  5. E597
Show answer
Answer: (C) 677 ≈ 25% of 580 + 19 × 28 = 145 + 532 = 677.
Question 4

What approximate value should come in place of (?) 20.02% of 160.04 + 37.04 × 24.02 = ?

  1. A980
  2. B820
  3. C920
  4. D1020
  5. E960
Show answer
Answer: (C) 920 ≈ 20% of 160 + 37 × 24 = 32 + 888 = 920.
Question 5

What approximate value should come in place of (?) 59.97% of 200.02 + 29.02 × 17.02 = ?

  1. A653
  2. B613
  3. C553
  4. D673
  5. E573
Show answer
Answer: (B) 613 ≈ 60% of 200 + 29 × 17 = 120 + 493 = 613.
Question 6

What approximate value should come in place of (?) 39.98% of 259.98 + 36.98 × 28.97 = ?

  1. A1177
  2. B1117
  3. C1097
  4. D1237
  5. E1257
Show answer
Answer: (A) 1177 ≈ 40% of 260 + 37 × 29 = 104 + 1073 = 1177.
Question 7

What approximate value should come in place of (?) 40.01% of 559.97 + 30.97 × 26.02 = ?

  1. A1110
  2. B950
  3. C990
  4. D1030
  5. E970
Show answer
Answer: (D) 1030 ≈ 40% of 560 + 31 × 26 = 224 + 806 = 1030.
Question 8

What approximate value should come in place of (?) 20.04% of 599.98 + 23.04 × 23.02 = ?

  1. A609
  2. B729
  3. C649
  4. D589
  5. E569
Show answer
Answer: (C) 649 ≈ 20% of 600 + 23 × 23 = 120 + 529 = 649.
Question 9

What approximate value should come in place of (?) 75.01% of 260.01 + 16.97 × 21.04 = ?

  1. A612
  2. B452
  3. C512
  4. D552
  5. E652
Show answer
Answer: (D) 552 ≈ 75% of 260 + 17 × 21 = 195 + 357 = 552.
Question 10

What approximate value should come in place of (?) 60.04% of 240.02 + 36.01 × 10.98 = ?

  1. A600
  2. B540
  3. C620
  4. D480
  5. E580
Show answer
Answer: (B) 540 ≈ 60% of 240 + 36 × 11 = 144 + 396 = 540.

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Question 11

What approximate value should come in place of (?) 59.97% of 580.04 + 25.02 × 27.02 = ?

  1. A1083
  2. B923
  3. C963
  4. D943
  5. E1023
Show answer
Answer: (E) 1023 ≈ 60% of 580 + 25 × 27 = 348 + 675 = 1023.
Question 12

What approximate value should come in place of (?) 75.02% of 540.04 + 23.98 × 25.04 = ?

  1. A945
  2. B1005
  3. C1085
  4. D905
  5. E1065
Show answer
Answer: (B) 1005 ≈ 75% of 540 + 24 × 25 = 405 + 600 = 1005.
Question 13

What approximate value should come in place of (?) 50.02% of 79.97 + 35.04 × 25.98 = ?

  1. A1050
  2. B890
  3. C850
  4. D950
  5. E910
Show answer
Answer: (D) 950 ≈ 50% of 80 + 35 × 26 = 40 + 910 = 950.
Question 14

What approximate value should come in place of (?) 39.98% of 440.01 + 30.97 × 12.04 = ?

  1. A548
  2. B608
  3. C468
  4. D648
  5. E448
Show answer
Answer: (A) 548 ≈ 40% of 440 + 31 × 12 = 176 + 372 = 548.
Question 15

What approximate value should come in place of (?) 20.04% of 200.04 + 32.01 × 25.97 = ?

  1. A972
  2. B872
  3. C832
  4. D912
  5. E932
Show answer
Answer: (B) 872 ≈ 20% of 200 + 32 × 26 = 40 + 832 = 872.
Question 16

What approximate value should come in place of (?) 60.01% of 279.97 + 15.01 × 24.02 = ?

  1. A428
  2. B528
  3. C568
  4. D468
  5. E588
Show answer
Answer: (B) 528 ≈ 60% of 280 + 15 × 24 = 168 + 360 = 528.
Question 17

What approximate value should come in place of (?) 20.01% of 560.01 + 37.01 × 10.97 = ?

  1. A579
  2. B479
  3. C559
  4. D619
  5. E519
Show answer
Answer: (E) 519 ≈ 20% of 560 + 37 × 11 = 112 + 407 = 519.
Question 18

What approximate value should come in place of (?) 24.97% of 580.02 + 36.04 × 24.97 = ?

  1. A965
  2. B1145
  3. C1045
  4. D1125
  5. E1105
Show answer
Answer: (C) 1045 ≈ 25% of 580 + 36 × 25 = 145 + 900 = 1045.
Question 19

What approximate value should come in place of (?) 25.04% of 520.02 + 29.01 × 15.98 = ?

  1. A594
  2. B674
  3. C514
  4. D634
  5. E554
Show answer
Answer: (A) 594 ≈ 25% of 520 + 29 × 16 = 130 + 464 = 594.

These are RankerClub practice questions written in the RBI Grade B pattern. They are not official SSC/IBPS/RRB papers.

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