Class 8 Exam > Class 8 Notes > Mathematics (Maths) Class 8 > MCQ (with Solutions): Exponents & Powers
MCQ (with Solutions): Exponents & Powers | Mathematics (Maths) Class 8 PDF Download
Q1: Find the value of 
(a) 1/16
(b) 1/64
(c) 16
(d) 64
View Answer 
Ans: (d)
Q2: Find the value of 16-2 × 1614.
(a) 1612
(b) 16-12
(c) 1614
(d) 16-14
View Answer Ans: (a)
am × an = am + n
⇒ 16-2 × 1614 = 16-2 + 14 = 1612.
Q3: Match the pairs.
(a) 1-b, 2-c, 3-d
(b) 1-b, 2-c, 3-a
(c) 1-c, 2-b, 3-a
(d) 1-c, 2-b, 3-d
View Answer Ans: (b)
am × bm = (ab)m
Q4: What is 2-3?
(a) 1/4
(b) 1/8
(c) 4
(d) 8
View Answer Ans: (b)
Q5: Evaluate 
(a) 2125
(b) 21-25
(c) 2124
(d) 21-24
View Answer Ans: (c)
Q6: Find the value of (2)3 (2)2
(a) 128
(b) 16
(c) 32
(d) 64
View Answer Ans: (c)
(a)m(a)n = am+n
= 25 = 32.
Q7: What is the multiplicative inverse of 10-3?
(a) 100
(b) -100
(c) 1/1000
(d) 1000
View Answer Ans: (d)
Multiplicative inverse of an = 1/an
⇒ Multiplicative inverse of 10-3 = 103 = 1000.
Q8: Find the value of 3-2.
(a) 1/9
(b) 
(c) 8
(d) 1/8
View Answer Ans: (a)
Q9: What is the value of 10-6?
(a) -0.000010
(b) -0.0000010
(c) 0.000010
(d) 0.0000010
View Answer Ans: (d)
⇒ 10-6 = 0.0000010.
Q10: Find the unknown value: 1/729 = 9-m.
(a) -4
(b) -3
(c) 3
(d) 4
View Answer Ans: (c)
The document MCQ (with Solutions): Exponents & Powers | Mathematics (Maths) Class 8 is a part of the Class 8 Course Mathematics (Maths) Class 8.
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FAQs on MCQ (with Solutions): Exponents & Powers - Mathematics (Maths) Class 8
| 1. What is an exponent? |  |
Ans. An exponent is a number that represents the power to which another number (base) is raised.
| 2. How do you multiply numbers with exponents? | |
Ans. To multiply numbers with exponents, you add the exponents when the bases are the same. For example, 2^3 * 2^2 = 2^(3+2) = 2^5 = 32.
| 3. What is the difference between a base and an exponent? | |
Ans. The base is the number that is being raised to a power, while the exponent is the number that represents the power to which the base is raised.
| 4. How do you divide numbers with exponents? | |
Ans. To divide numbers with exponents, you subtract the exponents when the bases are the same. For example, 5^4 / 5^2 = 5^(4-2) = 5^2 = 25.
| 5. How do negative exponents work? | |
Ans. Negative exponents indicate that the base should be divided by itself raised to the positive exponent. For example, 2^-3 = 1 / 2^3 = 1 / 8 = 0.125.
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