49+ Mathematical Operations Questions and Answers With Explanation

Q:

Select the missing number from the given responses.

A) 45	B) 65
C) 70	D) 80

Answer & Explanation Answer: B) 65

Explanation:

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38 2718

Q:

$X^{2} + X^{2} =$

A) 4X	B) 2X
C) 2X^2	D) X/2

Answer & Explanation Answer: C) 2X^2

Explanation:

Here the given expression,

$X^{2} + X^{2}$ is an algebraic expression. Here in this expression the terms are like terms. Now to add them, add their coefficients.

Here in the given expression, the like terms are two $X^{2}$

Hence, adding their coefficients i.e, 1 + 1 = 2

Therefore,

$X^{2} + X^{2}$ = 2 $X^{2}$ .

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14 2705

Q:

If "+" means "minus", "x" means "divided by", "÷" means "plus" and "-" means "multiplied by", then 81 x 9 + 10 – 6 ÷ 5 = ?

A) 46	B) -46
C) 47	D) -45

Answer & Explanation Answer: B) -46

Explanation:

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6 2587

Q:

In the following question, correct the equation by interchanging two signs.
6 + 8 ÷ 4 – 4 = 8

A) ÷ and =	B) ÷ and +
C) ÷ and –	D) + and –

Answer & Explanation Answer: D) + and –

Explanation:

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5 2478

Q:

5068 / 37 x 4 = ?

A) 548	B) 625
C) 214	D) 745

Answer & Explanation Answer: A) 548

Explanation:

? = 5068 x 4/37

? = 548

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20 2475

Q:

Can you Solve $7 + 7 \div 7 + 7 x 7 + 7 - 7 \div 7 + 7 x 7$ =

A) 112	B) 56
C) 0	D) 98

Answer & Explanation Answer: A) 112

Explanation:

$7 + 7 \div 7 + 7 x 7 + 7 - 7 \div 7 + 7 x 7 = 7 + 1 + 49 + 7 - 1 + 49 = 8 + 56 + 48 = 56 + 56 = 112$

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22 2340

Q:

3 x 3 + 3 - 3 + 3 = ?

A) 9	B) 12
C) -3	D) 3

Answer & Explanation Answer: B) 12

Explanation:

Using BODMAS law,

3 x 3 + 3 - 3 + 3 =

3 x 3 = 12

= 12 + 3 - 3 + 3

= 9 + 3

= 12

Hence, 3 x 3 + 3 - 3 + 3 = 12.

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19 2282

Q:

The following equation is incorrect. Which two signs should be interchanged to correct the equation? 15 x 12 + 40 ÷ 40 - 6 = 21

A) + and x	B) + and ÷
C) - and +	D) ÷ and x

Mathematical Operations Questions

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