Mathematical Operation Questions and Answer :The arithmetic operators carry out the addition, subtraction, multiplication, division, exponentiation, and modulus operations. The four fundamental arithmetic operations in mathematics for all real numbers are addition, subtraction, multiplication, and division.
Mathematical Operation Questions and Answer
1. Which two signs should be interchanged to correct the given equation?
5 + 3 × 8 – 12 ÷ 4 = 3
a) + and –
b) – and ÷
c) + and ÷
d) + and ×
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2. Which two signs should be interchanged to correct the given equation?
5 + 6 ÷ 3 – 12 × 2 = 17
a) + and x
b) + and ÷
c) ÷ and x
d) – and +
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3. Which two signs should be interchanged to correct the given equation?
10 + 10 ÷ 10 – 10 × 10 = 10
a) + and x
b) + and ÷
c) ÷ and x
d) – and +
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4. Which two signs should be interchanged to correct the given equation?
12 ÷ 2 – 6 × 3 + 8 = 16
a) × and –
b) + and ×
c) + and –
d) ÷ and +
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5. Which two signs should be interchanged to correct the given equation?
9 + 5 ÷ 4 × 3 – 6 = 12
a) × and –
b) + and ×
c) + and –
d) ÷ and –
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6. Which two signs should be interchanged to correct the given equation?
16 – 8 ÷ 4 + 5 × 2 = 8
a) ÷ and ×
b) – and +
c) × and –
d) + and ×
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7. Which two signs should be interchanged to correct the given equation?
2 × 3 + 6 – 12 ÷ 4 = 17
a) ÷ and ×
b) – and +
c) × and –
d) + and ×
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8. In a certain code language, ‘+’ represents ‘×’, ‘-‘ represents ‘+’, ‘×’ represents ‘÷’ and ‘÷’ represents ‘-‘. What is the answer to the following question?
8 – 2 + 81 × 27 ÷ 3 = ?
a) 55
b) 11
c) 26
d) 17
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9. Which two signs should be interchanged to make the given equation correct?
225 + 5 × 3 ÷ 5 – 7 = 133
a) × and ÷
b) – and +
c) × and –
d) + and ÷
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10. Find out the two signs to be interchanged to make the following equation correct.
27 + 24 × 1 – 7 ÷ 3 = 30
a) – and ÷
b) + and –
c) × and ÷
d) – and ×
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11. Interchanging which two signs will make the following equation correct?
15 + 3 × 9 – 4 ÷ 16 = 57
a) – and +
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b) – and ÷
c) – and ×
d) + and ÷
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12. If „A‟ means „+‟, „B‟ means „×‟, „C‟ means „†‟ and „D‟ means „-„, then 16 C 7 B 49 C 28 A 63 D 21 A 1 = ?
a) 47
b) 49
c) 63
d) 45
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13. If A represents 30, B represents 42, C represents 7, D represents 6 and E represents 25, then which mathematical equation will be equal to 19?
a) A – B ÷ C × D + E
b) A × B ÷ C + D × E
c) A ÷ B × C + D + E
d) A + B ÷ C × D – E
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14. If P means „†‟ Q means „+‟, R means „-„ and S means „×‟, then the value of 10 R 192 P 48 S 48 P 96 Q 1 is ?
a) 12
b) 19
c) 11
d) 9
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15. If the mathematical operator, „+‟ means „×‟, „†‟ means „-„, „-„ means „+‟, and „×‟ means „†‟, then the value of 45 + 95 × 19 – 55 ÷ 49 is
a) 113
b) 153
c) 231
d) 276
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16. Which of the following signs need to be interchanged to make the given equation correct?
12 ÷ 5 × 16 + 8 – 4 = 18
a) + and –
b) ÷ and ×
c) + and ÷
d) – and ÷
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17. Which of the following signs need to be interchanged to make the given equation correct?
3 ÷ 25 × 5 + 9 – 7 = 17
a) + and –
b) ÷ and ×
c) + and ÷
d) – and ÷
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18. In the following question, correct the equation by interchanging the two signs.
14 + 4 ÷ 5 – 18 × 2 = 25
a) + and x
b) ÷ and x
c) – and ÷
d) + and –
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19. If + means -, – means ×, × means ÷ and ÷ means +, then the value of the given equation 12 + 3 – 5 ÷ 69 × 23 is
a) 12
b) 15
c) 0
d) 13
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20. Which of the following two numbers need to be interchanged to make the given equation correct?
8 × 4 – 16 + 18 ÷ 6 = 59
a) 8 and 4
b) 18 and 16
c) 16 and 8
d) 8 and 6
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21. If + means -, – means ×, × means ÷ and ÷ means +, then then the value of the given equation 10 – 15 × 5 + 6 ÷ 3 is
a) 9
b) 3
c) 27
d) 18
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22. If + means -, – means ×, × means ÷ and ÷ means +, then what will be value of following expression?
90 × 10 – 15 ÷ 45 + 26 = ?
a) 123
b) 145
c) 167
d) 154
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23. In the following question, correct the equation by interchanging the two signs.
45 – 9 ÷ 3 + 5 × 6 = 32
a) + and ×
b) – and +
c) + and ÷
d) – and ÷
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24. If + means -, – means ×, × means ÷ and ÷ means +, then what will be value of following expression?
45 × 5 – 3 ÷ 60 + 22 = ?
a) 56
b) 65
c) 76
d) 67
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25. Which of the following interchange of signs would make the equation correct?
200 + 15 ÷ 6 × 9 – 29 = 181
a) × and ÷
b) + and ÷
c) + and –
d) × and –
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26. The following equation is incorrect. Which two signs should be interchanged to correct the equation?
10 ÷ 18 + 25 x 20 – 5 = 92
a) + and x
b) + and ÷
c) ÷ and –
d) – and +
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27. If 7 x 6 = 84, 1 x 4 = 8 and 2 x 3 = 12, then find the value of 8 x 4 = ?
a) 64
b) 36
c) 12
d) 40
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28. Which two signs should be interchanged to correct the given equation?
3 × 6 + 2 – 4 ÷ 8 = 13
a) × and –
b) + and ×
c) + and –
d) ÷ and +
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29. If „+‟ represents „×‟, „-„ represents „+‟, „× „ represents „†‟ and „†‟ represents „-„, then find the value of the following expression.
6 ÷ 8 × 2 – 4
a) 6
b) 24
c) 18
d) 12
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30. Which two mathematical symbols need to be interchanged to correct the below equation?
9 + 3 × 2 – 8 ÷ 4 = 8
a) ÷ and ×
b) ÷ and +
c) × and –
d) + and ×
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31. In a certain code language, + represents x , – represents + , X represents +, + represents -. Find out the answer to the following expression in that code language.
8 – 4x 2 + 6 = ?
a) 10
b) 12
c) 20
d) 18
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32. In a certain code language, „+‟ represents „×‟, „-„ represents „+‟, „×‟ represents „†‟ and „†‟ represents „- „. Find out the answer to the following question.
12 + 3 × 4 – 6 = ?
a) 5
b) 15
c) 10
d) 4
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33. Which two signs should be interchanged to make the given equation correct?
6-2 × 4 ÷ 10 + 5 = 6
a) × and –
b) ÷ and ×
c) + and –
d) ÷ and +
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34. In a certain code language, „+‟ represents „x‟, „- „represents „+‟ , „x„ represents „+‟ and „+‟ represents „-„. Find out the answer to the following mathematical expression in that language.
2 – 6 x 3 + 4 =?
a) 2
b) 12
c) 10
d) 8
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35. Which two signs should be interchanged to make the below equation mathematically correct?
12 – 3 + 8 × 2 ÷ 4 = 16
a) ÷ and ×
b) × and –
c) + and –
d) ÷ and –
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36. In a certain code language, „+‟ represents „×‟, „+‟ represents „+‟, „-‟ represents „+‟ and „×‟ represents „- ‟. Find out the answer to the following question considering that language as base.
9 × 3 ÷ 4 + 10 – 8 = ?
a) 11
b) 13
c) 30
d) 12
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37. Which two signs should be interchanged to correct the given equation?
15 ÷ 3 + 2×10 – 6 = 14
a) ÷ and –
b) ÷ and +
c) + and x
d) + and –
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38. In a certain code language, „+‟ represents „x‟, „-„ represents „+‟, „x‟ represents „+‟ and „+‟ represents „- „, calculate the answer of the following equation.
8 + 3 × 4 – 2 = ?
a) 12
b) 6
c) 10
d) 8
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39. If we interchange “+” with “–” and “†” with “×”, then what is the value of the below expression?
39 × 3 + 10 – 13 ÷ 2
a) 3
b) 17
c) 29
d) 31
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40. In a certain code language, ‘x’ represents ‘+’, ‘÷’ represents ‘x’, ‘-‘ represents ‘÷’ and ‘+’ represents ‘-‘. Find out the answer to the following question.
18 – 2 + 20 x 10 ÷ 4 = ?
a) 11
b) 2
c) 29
d) 35
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41. If we interchange “+” with “–” and “†” with “×”, then which of the below equations is correct?
a) 15 × 3 – 17 + 6 ÷ 2 = 11
b) 2 ÷ 7 + 8 – 21 × 3 = 14
c) 12 – 16 × 2 + 5 ÷ 4 = 1
d) 17 + 7 ÷ 2 – 21 × 3 = 10
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42. If ‘A’ means ‘+’, ‘B’ means ‘-‘, ‘C’ means ‘x’ and ‘D’ means ‘÷’, then find the value of
(1 D 1 C 1) A(2 C 2 D 2) A (3 D 3 C 3) B (4 C 4 D 4)
a) 3
b) 2
c) 6
d) 10
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43. If ‘+’ and ‘x’ are interchanged and also the numbers 5 and 9 change places, which of the
following options is correct?
a) 2 × 9 + 3 × 5 = 21
b) 5 × 9 + 3 × 3 = 0
c) 9 × 5 + 2 × 2 = 25
d) 3 + 9 × 3 + 5 = 32
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44. Which two signs should be interchanges in the following equation to make it correct?
10 + 16 – 60 x 20 ÷ 4 = 965
a) + and –
b) – and ×
c) ÷ and +
d) + and ×
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45. Which two signs should be interchanged in the following equation to make it correct?
405 + 27 x 40 – 308 ÷ 22 = 314
a) – and +
b) + and ÷
c) × and +
d) ÷ and –
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46. Which two signs should be interchanged in the following equation to make it correct?
211 x 14 + 627 ÷ 33 – 17 = 520
a) + and –
b) + and ÷
c) × and +
d) × and –
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47. Which two signs should be interchanged in the following equation to make it correct?
434 + 7 × 44 – 720 ÷ 15 = 174
a) + and –
b) ÷ and –
c) × and +
d) – and ×
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48. Which two signs should be interchanged in the following equation to make it correct?
40 + 10 × 6 ÷ 6 – 2 = 28
a) + and –
b) × and ÷
c) ÷ and +
d) × and –
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49. Which two signs need to be interchanged to make the following equation correct?
7 – 9 × 3 ÷ 9 + 5 = 5
a) – and ×
b) ÷ and ×
c) + and –
d) + and ÷
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50. Which two numbers need to be interchanged to make the given equation correct?
12 ÷ 3 – 6 + 4 × 96 = 74
a) 6, 4
b) 12, 96
c) 3, 6
d) 6, 96
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