49+ Mathematical Operations Questions and Answers With Explanation

Q:

The value of -4-(-10) is how much greater then the value of -10-(-4) ?

A) 10	B) 6
C) 12	D) 0

Answer & Explanation Answer: C) 12

Explanation:

-4-(-10) = -4+10 = 6

-10-(-4) = -10+4= -6

Therefore, 6-(-6) = 6+6 = 12

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29 3634

Q:

If 324⊕289 = 35, 441⊕484 = 43, then 625⊕400 = ?

A) 431	B) 413
C) 341	D) 143

Answer & Explanation Answer: D) 143

Explanation:

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24 3482

Q:

If "–" stands for "÷", "+"stands for "x", "÷" for "–" and "x" for "+", which of the following equations is correct?

A) 40 – 10 + 5 ÷ 4 x 5 = 21	B) 40 + 10 – 4 x 5 ÷ 3 = 80
C) 40 ÷ 10 – 4 x 5 + 3 = 32	D) 8 – 4 x 40 ÷ 2 + 15 = 30

Answer & Explanation Answer: A) 40 – 10 + 5 ÷ 4 x 5 = 21

Explanation:

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26 3386

Q:

What is x squared plus x squared?

A) 4x	B) 2x^2
C) x^4	D) 2x

Answer & Explanation Answer: B) 2x^2

Explanation:

In an algebraic expression, like terms are terms that contain the same variables raised to the same powers. Calculating x-squared plus x-squared is a matter of combining like terms.

Now x^2 + x^2 = 2x^2

Hence, x-squared plus x-squared is equal to 2 times x squared.

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8 3137

Q:

If "A" denotes "subtracted from", "B" denotes "added to", "C" denotes "divided by", "D" denotes "multiplied by", then which of the following statement is correct?

A) 3 A 12 B 16 D 17 C 1 = 163	B) 5 C 7 A 9 D 8 B 2 = 294
C) 13 C 13 A 13 B 13 D 13 = 157	D) 18 C 16 D 49 A 27 B 9 = 200

Answer & Explanation Answer: C) 13 C 13 A 13 B 13 D 13 = 157

Explanation:

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10 3125

Q:

Which of the following interchanges in signs and numbers will make the given equation correct?
8 x 9 + 2 = 74

A) x and =, 2 and 9	B) x and +, 8 and 2
C) + and x, 8 and 9	D) + and =, 74 and 2

Answer & Explanation Answer: B) x and +, 8 and 2

Explanation:

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7 3117

Q:

What is $7 + 7 \div 7 + 7 \times 7 - 7 =$

A) 0	B) 42
C) 50	D) 57

Answer & Explanation Answer: C) 50

Explanation:

Given 7 + 7/7 + 7 x 7 - 7

By using BODMAS rule,

7 + 1 + 7 x 7 - 7

= 8 + 49 - 7

= 57 - 7

= 50.

Hence 7 + 7/7 + 7 x 7 - 7 = 50.

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20 3016

Q:

In the following question, correct the given equation by interchanging two numbers.
8 x 3 ÷ 4 + 9 – 5 = 16

A) 3 and 4	B) 4 and 8
C) 5 and 3	D) 5 and 9

Mathematical Operations Questions

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