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SSC CPO SI/ASI Mathematical Operations Questions with Answers & Explanations

20 Mathematical Operations questions from the General Intelligence & Reasoning section of SSC CPO SI/ASI, 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

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 5 + 19 − 12 × 6 ÷ 6

  1. A93
  2. B86
  3. C94
  4. D91
Show answer
Answer: (D) 91 Replace the signs: 5 × 19 + 12 ÷ 6 − 6 = 95 + 2 − 6 = 91.
Question 2

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 8 + 16 − 72 × 8 ÷ 8

  1. A134
  2. B127
  3. C124
  4. D129
Show answer
Answer: (D) 129 Replace the signs: 8 × 16 + 72 ÷ 8 − 8 = 128 + 9 − 8 = 129.
Question 3

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 14 − 14 × 2 ÷ 5

  1. A95
  2. B100
  3. C105
  4. D97
Show answer
Answer: (B) 100 Replace the signs: 7 × 14 + 14 ÷ 2 − 5 = 98 + 7 − 5 = 100.
Question 4

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 19 − 36 × 9 ÷ 3

  1. A57
  2. B59
  3. C63
  4. D58
Show answer
Answer: (D) 58 Replace the signs: 3 × 19 + 36 ÷ 9 − 3 = 57 + 4 − 3 = 58.
Question 5

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 14 − 10 × 2 ÷ 4

  1. A104
  2. B99
  3. C101
  4. D96
Show answer
Answer: (B) 99 Replace the signs: 7 × 14 + 10 ÷ 2 − 4 = 98 + 5 − 4 = 99.
Question 6

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 5 − 20 × 5 ÷ 1

  1. A19
  2. B13
  3. C23
  4. D18
Show answer
Answer: (D) 18 Replace the signs: 3 × 5 + 20 ÷ 5 − 1 = 15 + 4 − 1 = 18.
Question 7

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 5 − 21 × 3 ÷ 4

  1. A20
  2. B21
  3. C18
  4. D19
Show answer
Answer: (C) 18 Replace the signs: 3 × 5 + 21 ÷ 3 − 4 = 15 + 7 − 4 = 18.
Question 8

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 6 + 18 − 24 × 3 ÷ 9

  1. A105
  2. B102
  3. C107
  4. D110
Show answer
Answer: (C) 107 Replace the signs: 6 × 18 + 24 ÷ 3 − 9 = 108 + 8 − 9 = 107.
Question 9

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 8 + 13 − 21 × 3 ÷ 2

  1. A110
  2. B109
  3. C108
  4. D114
Show answer
Answer: (B) 109 Replace the signs: 8 × 13 + 21 ÷ 3 − 2 = 104 + 7 − 2 = 109.
Question 10

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 9 − 20 × 5 ÷ 1

  1. A38
  2. B39
  3. C44
  4. D42
Show answer
Answer: (B) 39 Replace the signs: 4 × 9 + 20 ÷ 5 − 1 = 36 + 4 − 1 = 39.

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Question 11

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 2 − 24 × 6 ÷ 8

  1. A5
  2. B4
  3. C7
  4. D2
Show answer
Answer: (D) 2 Replace the signs: 3 × 2 + 24 ÷ 6 − 8 = 6 + 4 − 8 = 2.
Question 12

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 17 − 24 × 6 ÷ 3

  1. A123
  2. B120
  3. C118
  4. D117
Show answer
Answer: (B) 120 Replace the signs: 7 × 17 + 24 ÷ 6 − 3 = 119 + 4 − 3 = 120.
Question 13

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 5 + 15 − 64 × 8 ÷ 3

  1. A79
  2. B75
  3. C80
  4. D83
Show answer
Answer: (C) 80 Replace the signs: 5 × 15 + 64 ÷ 8 − 3 = 75 + 8 − 3 = 80.
Question 14

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 9 + 15 − 54 × 9 ÷ 8

  1. A128
  2. B133
  3. C136
  4. D132
Show answer
Answer: (B) 133 Replace the signs: 9 × 15 + 54 ÷ 9 − 8 = 135 + 6 − 8 = 133.
Question 15

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 11 − 24 × 3 ÷ 4

  1. A50
  2. B47
  3. C48
  4. D49
Show answer
Answer: (C) 48 Replace the signs: 4 × 11 + 24 ÷ 3 − 4 = 44 + 8 − 4 = 48.
Question 16

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 4 − 32 × 8 ÷ 6

  1. A13
  2. B14
  3. C12
  4. D19
Show answer
Answer: (B) 14 Replace the signs: 4 × 4 + 32 ÷ 8 − 6 = 16 + 4 − 6 = 14.
Question 17

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 6 + 16 − 42 × 6 ÷ 3

  1. A100
  2. B97
  3. C98
  4. D103
Show answer
Answer: (A) 100 Replace the signs: 6 × 16 + 42 ÷ 6 − 3 = 96 + 7 − 3 = 100.
Question 18

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 2 + 11 − 12 × 6 ÷ 3

  1. A26
  2. B21
  3. C18
  4. D16
Show answer
Answer: (B) 21 Replace the signs: 2 × 11 + 12 ÷ 6 − 3 = 22 + 2 − 3 = 21.
Question 19

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 8 + 6 − 27 × 9 ÷ 9

  1. A40
  2. B47
  3. C42
  4. D37
Show answer
Answer: (C) 42 Replace the signs: 8 × 6 + 27 ÷ 9 − 9 = 48 + 3 − 9 = 42.
Question 20

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 6 + 20 − 45 × 9 ÷ 1

  1. A126
  2. B124
  3. C122
  4. D129
Show answer
Answer: (B) 124 Replace the signs: 6 × 20 + 45 ÷ 9 − 1 = 120 + 5 − 1 = 124.

These are RankerClub practice questions written in the SSC CPO SI/ASI pattern. They are not official SSC/IBPS/RRB papers.

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