MP Board Class 7th Maths Solutions Chapter 2 Fractions and Decimals Ex 2.3
Question 1.
Solution:
Question 2.
Multiply and reduce to lowest form (if possible):
Solution:
Question 3.
Multiply the following fractions:
Solution:
Question 4.
Solution:
Converting these fractions into like fractions, we obtain
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:
From the figure, it can be observed that gap between first and last sapling = 3 × Length of gap 1
Therefore, distance between first and last
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:
Time taken by Lipika to read the book per day = \(1 \frac{3}{4}\) hours = \(\frac{7}{4}\) hours
Number of days = 6
Total time taken by her to read the entire book = \(\frac{7}{4}\) × 6 hours = \(\frac{21}{2}\) hours
= \(=10 \frac{1}{2}\)hours
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:
A car can run per litre of petrol = 16 km
Quantity of petrol = \(2 \frac{3}{4}\) litres = \(\frac{11}{4}\) litres
So, a car can run for \(\frac{11}{4}\) litres of petrol
Question 8.
Solution:
