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RBI Grade B Mathematical Operations Questions with Answers & Explanations

20 Mathematical Operations questions from the Reasoning 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

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 19 − 63 × 9 ÷ 4

  1. A63
  2. B61
  3. C60
  4. D65
  5. E59
Show answer
Answer: (C) 60 Replace the signs: 3 × 19 + 63 ÷ 9 − 4 = 57 + 7 − 4 = 60.
Question 2

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 8 − 16 × 4 ÷ 8

  1. A28
  2. B23
  3. C26
  4. D25
  5. E29
Show answer
Answer: (A) 28 Replace the signs: 4 × 8 + 16 ÷ 4 − 8 = 32 + 4 − 8 = 28.
Question 3

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 18 − 6 × 3 ÷ 2

  1. A77
  2. B67
  3. C75
  4. D72
  5. E69
Show answer
Answer: (D) 72 Replace the signs: 4 × 18 + 6 ÷ 3 − 2 = 72 + 2 − 2 = 72.
Question 4

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 5 − 15 × 5 ÷ 6

  1. A12
  2. B13
  3. C15
  4. D7
  5. E9
Show answer
Answer: (A) 12 Replace the signs: 3 × 5 + 15 ÷ 5 − 6 = 15 + 3 − 6 = 12.
Question 5

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 3 + 17 − 56 × 8 ÷ 2

  1. A53
  2. B57
  3. C56
  4. D51
  5. E58
Show answer
Answer: (C) 56 Replace the signs: 3 × 17 + 56 ÷ 8 − 2 = 51 + 7 − 2 = 56.
Question 6

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 19 − 36 × 9 ÷ 5

  1. A130
  2. B137
  3. C132
  4. D134
  5. E133
Show answer
Answer: (C) 132 Replace the signs: 7 × 19 + 36 ÷ 9 − 5 = 133 + 4 − 5 = 132.
Question 7

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

  1. A68
  2. B76
  3. C71
  4. D70
  5. E66
Show answer
Answer: (C) 71 Replace the signs: 6 × 12 + 12 ÷ 6 − 3 = 72 + 2 − 3 = 71.
Question 8

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 8 + 9 − 14 × 2 ÷ 1

  1. A81
  2. B75
  3. C78
  4. D80
  5. E73
Show answer
Answer: (C) 78 Replace the signs: 8 × 9 + 14 ÷ 2 − 1 = 72 + 7 − 1 = 78.
Question 9

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 9 + 17 − 64 × 8 ÷ 2

  1. A157
  2. B162
  3. C159
  4. D160
  5. E156
Show answer
Answer: (C) 159 Replace the signs: 9 × 17 + 64 ÷ 8 − 2 = 153 + 8 − 2 = 159.
Question 10

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 6 + 9 − 36 × 9 ÷ 5

  1. A56
  2. B55
  3. C52
  4. D54
  5. E53
Show answer
Answer: (E) 53 Replace the signs: 6 × 9 + 36 ÷ 9 − 5 = 54 + 4 − 5 = 53.

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Question 11

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 15 − 16 × 8 ÷ 2

  1. A62
  2. B55
  3. C58
  4. D60
  5. E65
Show answer
Answer: (D) 60 Replace the signs: 4 × 15 + 16 ÷ 8 − 2 = 60 + 2 − 2 = 60.
Question 12

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 3 − 12 × 6 ÷ 3

  1. A9
  2. B6
  3. C8
  4. D13
  5. E11
Show answer
Answer: (E) 11 Replace the signs: 4 × 3 + 12 ÷ 6 − 3 = 12 + 2 − 3 = 11.
Question 13

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 19 − 48 × 8 ÷ 6

  1. A135
  2. B133
  3. C132
  4. D128
  5. E138
Show answer
Answer: (B) 133 Replace the signs: 7 × 19 + 48 ÷ 8 − 6 = 133 + 6 − 6 = 133.
Question 14

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 5 + 5 − 36 × 4 ÷ 2

  1. A30
  2. B32
  3. C31
  4. D29
  5. E34
Show answer
Answer: (B) 32 Replace the signs: 5 × 5 + 36 ÷ 4 − 2 = 25 + 9 − 2 = 32.
Question 15

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 4 + 6 − 30 × 6 ÷ 9

  1. A17
  2. B20
  3. C21
  4. D18
  5. E23
Show answer
Answer: (B) 20 Replace the signs: 4 × 6 + 30 ÷ 6 − 9 = 24 + 5 − 9 = 20.
Question 16

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 2 + 15 − 63 × 7 ÷ 6

  1. A36
  2. B28
  3. C32
  4. D33
  5. E38
Show answer
Answer: (D) 33 Replace the signs: 2 × 15 + 63 ÷ 7 − 6 = 30 + 9 − 6 = 33.
Question 17

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 16 − 4 × 2 ÷ 7

  1. A107
  2. B108
  3. C105
  4. D109
  5. E110
Show answer
Answer: (A) 107 Replace the signs: 7 × 16 + 4 ÷ 2 − 7 = 112 + 2 − 7 = 107.
Question 18

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 3 − 15 × 3 ÷ 7

  1. A22
  2. B16
  3. C19
  4. D18
  5. E20
Show answer
Answer: (C) 19 Replace the signs: 7 × 3 + 15 ÷ 3 − 7 = 21 + 5 − 7 = 19.
Question 19

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 2 − 18 × 6 ÷ 8

  1. A9
  2. B12
  3. C4
  4. D8
  5. E11
Show answer
Answer: (A) 9 Replace the signs: 7 × 2 + 18 ÷ 6 − 8 = 14 + 3 − 8 = 9.
Question 20

If '+' means '×', '−' means '+', '×' means '÷' and '÷' means '−', what is the value of: 7 + 5 − 28 × 4 ÷ 5

  1. A37
  2. B38
  3. C42
  4. D39
  5. E34
Show answer
Answer: (A) 37 Replace the signs: 7 × 5 + 28 ÷ 4 − 5 = 35 + 7 − 5 = 37.

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

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Seating Arrangement 69 Qs Alphabet & Word Order 38 Qs Syllogism 28 Qs Inequality 27 Qs Direction Sense 27 Qs Order & Ranking 27 Qs Coding-Decoding 27 Qs Series 27 Qs

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