Number and Number Sense, Numerical expressions with Exponents, Math worksheet for Grade 8 at myTestBook.com

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Question 1
Which of the following is bigger than 5⁴?
A.	5²	B.	−5⁴
C.	5^{3 + 2}	D.	5^{2 + 2}

Question 2
Which of the following expression is smaller than (a + b)^{x + 4}? Note: a, b, c and x are positive numbers.
A.	(a + b)^{x + 5}	B.	(a + b)^{x + 2}
C.	(a + b + c)⁴	D.	None of the above

Question 3
Which of the following expression is bigger than (a + 99)^{(b + 4)}? Note: a and b are positive numbers.
A.	(a + 95)^{(b + 2)}	B.	(a + 99)^{(b + 2)}
C.	(0.5×a + 99)^{(b + 4)}	D.	(a + 99)^{(2×b + 4)}

Question 4
Simplify the following expression. A^x ÷ A² × A^m
A.	A^{x − 2 − m}	B.	A^{x − 2 + m}
C.	A^{x − 2}m	D.	A^{x + 2 + m}

Question 7

Which of the following is equal to the (α − β)^2(a−b)?

(α − β)^2a

(α − β)^2b

(α − β)^a

(α − β)^b

(α − β)^2a

(α − β)^b

(α − β)^2a × (α − β)^b

Question No Answer
1 C
2 B
3 D
4 B
5 A
6 D
7 A
8 C
9 B
10 C

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