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# Test: Exponents And Powers - 2

## 20 Questions MCQ Test Mathematics (Maths) Class 7 | Test: Exponents And Powers - 2

Description
This mock test of Test: Exponents And Powers - 2 for Class 7 helps you for every Class 7 entrance exam. This contains 20 Multiple Choice Questions for Class 7 Test: Exponents And Powers - 2 (mcq) to study with solutions a complete question bank. The solved questions answers in this Test: Exponents And Powers - 2 quiz give you a good mix of easy questions and tough questions. Class 7 students definitely take this Test: Exponents And Powers - 2 exercise for a better result in the exam. You can find other Test: Exponents And Powers - 2 extra questions, long questions & short questions for Class 7 on EduRev as well by searching above.
QUESTION: 1

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QUESTION: 2

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QUESTION: 3

### The value of (−1)450 is

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QUESTION: 4

The value of (−1)91 is

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QUESTION: 5

The value of (−1)310 is

Solution:

Since the power is an even integer , the minus sign will get cancelled. So we will receive 1 only.

QUESTION: 6

The value of 28 is

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QUESTION: 7

Simplify and write in exponential form of 22x 25

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QUESTION: 8

Simplify and write in exponential form of (− 4)100× (−4)20

Solution:

When bases are same, powers are added. So we will add powers
(-4)100(-4)20=(-4)120

QUESTION: 9

Simplify and write in exponential form of 52× 57× 512

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QUESTION: 10

The value of 22 is

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QUESTION: 11

The exponent in the expression 37 is _______

Solution:

3 raised to the power of 7 here three is called base and other one is exponent.

QUESTION: 12

The value of 30 is ________ .

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QUESTION: 13

The value of 50 is ________ .

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QUESTION: 14

The value of 70 is ________ .

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QUESTION: 15

The value of 110 is ________ .

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QUESTION: 16

Multiplicative inverse of 1/5 is

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QUESTION: 17

Multiplicative inverse of 1/7 is

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QUESTION: 18

Multiplicative inverse of 1/3 is

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QUESTION: 19

Multiplicative inverse of 9 is

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QUESTION: 20

Multiplicative inverse of 21 is

Solution:

Multiplicative inverse means is a number which when multiplied by x yields the multiplicative identity, 1. A number multiplied by 21 wich give 1 is the reciprocal of 21 which is 1/21