NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Exercise 2.3
Ex 2.3 Class 7 Maths Question 1.
Find:

Solution:

Ex 2.3 Class 7 Maths Question 2.
Multiply and reduce to lowest form (if possible):

Solution:

Ex 2.3 Class 7 Maths Question 3.
Multiply the following fractions:

Solution:

Ex 2.3 Class 7 Maths Question 4.
Which is greater:

Solution:

Ex 2.3 Class 7 Maths Question 5.
Saili plants 4 saplings, in a row, in her garden. The distance between two adjacent saplings is \(\frac{3}{4}\) m. Find the distance between the first and the last sapling.
Solution:
Number of saplings = 4
Distance between two adjacent saplings = \(\frac{3}{4}\) m
∴ Distance between the first and the last sapling

Ex 2.3 Class 7 Maths Question 6.
Lipika reads a book for \(1 \frac{3}{4}\) hours everyday. She reads the entire book in 6 days. How many hours in all were required by her to read the book?
Solution:
In 1 day Lipika needs \(1 \frac{3}{4}\) hours
In 6 days Lipika will need \(6 \times 1 \frac{3}{4}\) hours

Hence the required hours = \(10 \frac{1}{2}\).

Ex 2.3 Class 7 Maths Question 7.
A car runs 16 km using 1 litre of petrol. How much distance will it cover using \(2 \frac{3}{4}\) litres of petrol?
Solution:
In 1 litre of petrol, the car covers 16 km distance In \(2 \frac{3}{4}\) litres of petrol, the car will cover \(2 \frac{3}{4}\) × 16 km distance

Hence, the required distance = 44 km.

Ex 2.3 Class 7 Maths Question 8.

Solution: