Mathematical Operation questions Practice Question and Answer

Q:

By interchanging the given two signs and numbers which of the following equation will be correct?
 + and –, 7 and 6

194 0

  • 1
    4 × 7 + 6 – 3 ÷ 1 = 20
    Correct
    Wrong
  • 2
    8 × 7 + 5 ÷ 1 – 6 = 17
    Correct
    Wrong
  • 3
    7 – 6 × 3 + 4 ÷ 1 = 8
    Correct
    Wrong
  • 4
    7 × 2 – 6 + 4 ÷ 2 = 13
    Correct
    Wrong
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Answer : 1. "4 × 7 + 6 – 3 ÷ 1 = 20"

Q:

By interchanging the given two signs and numbers which of the following equation will be not correct?
 ÷ and ×, 1 and 3

187 0

  • 1
    6 ÷ 3 – 1 + 4 × 2 = 5
    Correct
    Wrong
  • 2
    4 × 3 – 1 + 8 ÷ 2 = 9
    Correct
    Wrong
  • 3
    5 – 8 × 3 + 9 ÷ 1 = 24
    Correct
    Wrong
  • 4
    6 + 4 – 9 × 3 ÷ 1 = –17
    Correct
    Wrong
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Answer : 2. "4 × 3 – 1 + 8 ÷ 2 = 9"

Q:

If + means −, − means ×, × means ÷, and ÷ means +, what will be the value of the following expression?
 3 ÷ 6 + 3 – 4 × 4 = ?

253 0

  • 1
    8
    Correct
    Wrong
  • 2
    5
    Correct
    Wrong
  • 3
    6
    Correct
    Wrong
  • 4
    4
    Correct
    Wrong
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Answer : 3. "6"

Q:

Which of the following interchange of numbers and mathematical signs would make the given equation correct?
 30 ÷ 6 × 4 + 15−35 = 25

239 0

  • 1
    25 and 30, × and−
    Correct
    Wrong
  • 2
    4 and 6, + and−
    Correct
    Wrong
  • 3
    25 and 35, × and ÷
    Correct
    Wrong
  • 4
    30 and 35, −and ÷
    Correct
    Wrong
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Answer : 3. "25 and 35, × and ÷"

Q:

Which two signs and two numbers should be interchanged in the following equation to make it correct?
 150 × 15 + 14 – 9 ÷ 2 =6

212 0

  • 1
    9, 2, −, ×
    Correct
    Wrong
  • 2
    9, 2, ÷, ×
    Correct
    Wrong
  • 3
    150, 2, ÷, −
    Correct
    Wrong
  • 4
    15, 9, +, ÷
    Correct
    Wrong
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Answer : 2. "9, 2, ÷, ×"

Q:

If  ‘+’  means ‘÷’,   ‘ ̶ ’  means  ‘+’,   ‘×’ means  ‘ ̶ ’  and   ‘÷’  means  ‘×’,   what will be the value of the following expression?
 [{(38 × 23) - (4 ÷ 3)} + (6 - 3)] ÷ 2

225 0

  • 1
    3
    Correct
    Wrong
  • 2
    6
    Correct
    Wrong
  • 3
    8
    Correct
    Wrong
  • 4
    12
    Correct
    Wrong
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Answer : 2. "6"

Q:

Which of the following interchanges of numbers and mathematical signs would make the given equation correct?
 729 × 81 ÷ 20 + 16 − 6 = 50

233 0

  • 1
    6 and 20, × and ÷
    Correct
    Wrong
  • 2
    20 and 50, + and −
    Correct
    Wrong
  • 3
    16 and 50, × and +
    Correct
    Wrong
  • 4
    16 and 20, + and ÷
    Correct
    Wrong
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Answer : 1. "6 and 20, × and ÷"

Q:

By interchanging the given two signs which of the following equation will be correct?
 ÷ and +

215 0

  • 1
    8 + 4 × 5 ÷ 2 – 6 = 7
    Correct
    Wrong
  • 2
    16 + 8 × 2 ÷ 6 – 4 = 8
    Correct
    Wrong
  • 3
    18 + 2 × 6 ÷ 3 – 7 = 50
    Correct
    Wrong
  • 4
    11 + 8 × 16 ÷ 4 – 7 = 20
    Correct
    Wrong
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Answer : 3. "18 + 2 × 6 ÷ 3 – 7 = 50"

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