Olympiad Test: Exponents And Powers -1


20 Questions MCQ Test Mathematical Olympiad Class 8 | Olympiad Test: Exponents And Powers -1


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Attempt Olympiad Test: Exponents And Powers -1 | 20 questions in 40 minutes | Mock test for Class 8 preparation | Free important questions MCQ to study Mathematical Olympiad Class 8 for Class 8 Exam | Download free PDF with solutions
QUESTION: 1

What is the value of [(5- 1 × 3-1 ) -1 ÷ 6 - 1 ] ?

Solution:

QUESTION: 2

​What is the value of 

Solution:


QUESTION: 3

What is the value of p for which

Solution:


2p – 1 = - 3
⇒ 2p = - 2
⇒ p = -1

QUESTION: 4

If 52x + 1 ÷ 25 = 125. What is the value of x?

Solution:

QUESTION: 5

By what number should be divided so that the quotient is ?

Solution:

Let the number be x.

x = -3/2 

QUESTION: 6

What is the value of ?

Solution:

We have 

QUESTION: 7

What is the value of ?

Solution:
QUESTION: 8

By what number should  be multiplied so that the product is ?

Solution:

Let the number be x.

QUESTION: 9

By what number should (-6)-1 be multiplied so that the product becomes 9-1?

Solution:

(- 6)-1 × x = 9-1

QUESTION: 10

What is the standard form of 0.00000000837?

Solution:

We have 0.00000000837 =  

QUESTION: 11

What is the value of x for which. 

Solution:
QUESTION: 12

The value of (3-1 + 4-1)-1 ÷ 5-1 =?

Solution:

Here (3-1 + 4-1)-1 ÷ 5-1

QUESTION: 13

If (23x – 1 + 10) ÷ 7 = 6 then what is the value of x?

Solution:

Here (23x - 1 + 10) ÷ 7 = 6

On comparing the powers

x = 2

QUESTION: 14

What is the usual  form of 0.000467 × 104 ?

Solution:

0.000467 × 104.

QUESTION: 15

If , Find x?

Solution:


QUESTION: 16

​What will be the value of , where x = - 0.5?

Solution:


QUESTION: 17

Express 1 micron in standard form.​

Solution:

QUESTION: 18

​The value of  is :

Solution:

QUESTION: 19

If 52p + 5p + 50 = 651, then p =

Solution:

QUESTION: 20

If then x =  then x =

Solution:

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