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Olympiad Test: Rational Numbers -1 - Class 8 MCQ


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20 Questions MCQ Test Mathematical Olympiad Class 8 - Olympiad Test: Rational Numbers -1

Olympiad Test: Rational Numbers -1 for Class 8 2024 is part of Mathematical Olympiad Class 8 preparation. The Olympiad Test: Rational Numbers -1 questions and answers have been prepared according to the Class 8 exam syllabus.The Olympiad Test: Rational Numbers -1 MCQs are made for Class 8 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Olympiad Test: Rational Numbers -1 below.
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Olympiad Test: Rational Numbers -1 - Question 1

If 3/5 of a number exceeds its 2/7 by 44, then what is the number?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 1

Let the number be x.

Olympiad Test: Rational Numbers -1 - Question 2

A bus is moving at an average speed of  km/hr. How much distance it will cover inhour?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 2

Distance = Speed × Time

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Olympiad Test: Rational Numbers -1 - Question 3

The sum of two numbers is -4/3 If one of them is –5  then what is the other number?

Olympiad Test: Rational Numbers -1 - Question 4

In a school 5/8 of the students are boys. If the number of girls are 270. What is the number of boys in the school?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 4

No. of girls = 1 - 5/8 = 3/8
Let x be the total no. of students then

x = 720
No. of boys = 720 - 270 = 450

Olympiad Test: Rational Numbers -1 - Question 5

A cord of lengthm has been cut into 26 pieces of equal length. What is the length of each piece?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 5

Length of each piece 
                                 

Olympiad Test: Rational Numbers -1 - Question 6

The product of two numbers is -16/35 . If one of the number is -15/14 what is the other number?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 6

Let the number be x.

Olympiad Test: Rational Numbers -1 - Question 7

What should be subtracted from -5/3  to get 5/6 ?

Olympiad Test: Rational Numbers -1 - Question 8

What is additive inverse of -7/9?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 8

If x is the additive inverse then 
x = 7/9

Olympiad Test: Rational Numbers -1 - Question 9

The sum of two rational numbers is – 3. If one of the number is -10/3. What is the other number?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 9

Olympiad Test: Rational Numbers -1 - Question 10

The cost of metres of cloth is .  What is the cost of one metre of cloth?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 10

Cost of one metre of cloth = 

Olympiad Test: Rational Numbers -1 - Question 11

​By what number should -33/8 be divided to get -11/2 ?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 11


=>  x= 3/4

Olympiad Test: Rational Numbers -1 - Question 12

By what rational number should we multiplying -16/63 - to get -4/7.

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 12

Olympiad Test: Rational Numbers -1 - Question 13

What number should be added to -7/8 to get 4/9 ?​

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 13


x = 95/72

Olympiad Test: Rational Numbers -1 - Question 14

What is reciprocal of ?​

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 14

We have 
∴    Reciprocal of 

Olympiad Test: Rational Numbers -1 - Question 15

Which rational number is in between -2/3 and -1/4?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 15

ANSWER :- d

Solution :- If a and b are two Rational numbers then a rational number between them is ( a + b )/2

Rational number between -2/3 and -1/4 = [ (-2/3) + (-1/4)]/2

= [ ( -8 - 3 )/12]/2

= [(-11)/12]/2

= -11/24

Olympiad Test: Rational Numbers -1 - Question 16

What is the reciprocal of ?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 16


 

Olympiad Test: Rational Numbers -1 - Question 17

What should be added to -3/5 to get -1/3?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 17

Let x should be added.

Olympiad Test: Rational Numbers -1 - Question 18

What is the additive inverse of  ?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 18


Additive inverse of 17/60 is -17/60.

Olympiad Test: Rational Numbers -1 - Question 19

What is the value of 3/4 ÷ 5/8 x 3/7 + 2/9 - 1/3 ?

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 19

Olympiad Test: Rational Numbers -1 - Question 20

What is the value of  

Detailed Solution for Olympiad Test: Rational Numbers -1 - Question 20

Here 

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