RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions for Class 7 Mathematics

Created by: Abhishek Kapoor

Class 7 : RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

The document RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev is a part of the Class 7 Course RD Sharma Solutions for Class 7 Mathematics.
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QUESTION 1:

Compare the following fractions by using the symbol > or < or =:
(i) 7/9 and 8/13
(ii) 11/9 and 5/9
(iii) 37/41 and 19/30
(iv) 
17/15 and 119/105


ANSWER 1:

First, we need to find the LCM of denominators in each case. After that, we will equate the denominators in order to compare the two fractions.

(i)
     LCM of 9 and 13 is 117.

Now make both fraction equivalent with denominator as 117 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(ii)
both fraction have same denominator as 9

we know 11>5 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iii)
LCM of 41 and 30 is 1230

Now convert both fraction to their equivalent fractions with denominator as 1230 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


(iv)
LCM of 15 and 105 is 105.
Now convert fraction to its equivalent fractions with denominator as 105 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


QUESTION 2:

Arrange the following fractions in ascending order:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

ANSWER 2:

(i)
LCM of the denominators 8, 6, 4 and 3 is 24.Now, convert all fractions into their equivalent fractions with denominator 24.

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

we know

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


(ii)
LCM of the denominators 8, 12, 16 and 3 is 48.Now, convert all fractions into their equivalent fractions with denominator 48. 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

we know

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


QUESTION 3:

Arrange the following fractions in descending order:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

ANSWER 3:

(i)
LCM of the denominators 5, 10, 15 and 20 is 60.Now, convert all fractions to their equivalent fractions with denominator 60.

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

we know:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(ii)
LCM of the denominators 7, 35, 14 and 28 is 140.Now, convert all fractions to their equivalent fractions with denominator 140. 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Question 4:

Write five equivalent fractions of 3/5


Answer 4:

Five equivalent fractions of 3/5 are :

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Question 5:

Find the sum:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Answer 5:

(i)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(ii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iv)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Question 6:

Find the difference of 

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Answer 6:

(i)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(ii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iv)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Question 7:

Find the difference:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

Answer 7:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(ii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


(iv)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


QUESTION 8:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

Answer 8:

(i)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(ii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

(iii)

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Question 9:

What should be added to RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


Answer 9:

Let x be the required fraction.
According to the question:

RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev


RD Sharma Solutions (Part - 1) - Ex-2.1, Fractions, Class 7, Math Class 7 Notes | EduRev




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