Chapter 6: Fractions – Exercise 6.8

Question: 1

 Write these fractions appropriately as additions or subtraction:

Solution:

Question: 2

Solve:

Solution:

i) The given fractions are:

Hence the answer is 3/5

ii) The given fractions are:

Hence the answer is 4/3

iii) the given fractions are:

Hence the answer is 5/11

iv) the given fractions are:

Hence the answer is 1/4

v) The given fractions are:

Hence the answer is 7/13

vi) the given fractions are:

Hence the answer is 1/5

vii) the given fractions are:

Hence the answer is 12/31

viii) the given fractions are:

Hence the answer is 1/1 = 1

ix) the given fractions are:

Hence the answer is 5/1 = 5

x) the given fractions are:

Hence the answer is 8/3

xi) the given fractions are:

Hence the answer is 20/7

Question: 3

Shikha painted 1/5 of the wall space in her room. Her brother ravish helped and painted 3/5 of the wall space. How much did they paint together? How much the room is left unpainted?

Solution:

Shikha painted 1/5 of the wall space in her room

Ravish painted 3/5 of the wall space

Wall space painted by both of them together

Unpainted part of the room

Question: 4

Ramesh bought sugar whereas rohit boughtof sugar. Find the total amount of sugar bought by both of them.

Solution:

Quantity of sugar bought by ramesh =

Quantity of sugar bought by rohit =

Total amount of sugar bought by them:

Quantity of sugar bought by rohit + Quantity of sugar bought by ramesh

= 6 kg (Dividing numerator and denominator by their HCF (6))

Question: 5

The teacher taught 3/5 of the book, Vivek revised 1/5 more on his own. How much does he still have to revise?

Solution:

Fraction of the book taught by the teacher = 3/5

Fraction of the book revised by vivek = 1/5

Fraction of the book still left for revision by vivek:

Therefore, Fraction of the book still left for revision by vivek is 2/5

Question: 6

 Amit was given 5/7 of a bucket of oranges. What fraction of oranges was left in the basket?

Solution:

Fraction of oranges given to amit = 5/7

Fraction of oranges left in the basket:

Therefore, Fraction of oranges left in the basket is 2/7

Question: 7

Solution:

i) Given:

Therefore,

ii) Given:

Therefore,

iii) Given:

Therefore,

iv) Given:

Therefore,