Students can Download Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.3 Questions and Answers, Notes Pdf, KSEEB Solutions for Class 7 Maths helps you to revise the complete Karnataka State Board Syllabus and to clear all their doubts, score well in final exams.
Karnataka State Syllabus Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.3
Question 1.
Find:
Solution:
(ii)
Solution:
(c) \(\frac{1}{7} \text { of } \frac{3}{10}\)
Solution:
Question 2.
Multiply and reduce to lowest form (if possible)
(i) \(\frac{2}{3} \times 2 \frac{2}{3}\)
Solution:
(ii) \(\frac{2}{7} \times \frac{7}{9}\)
Solution:
(iii) \(\frac{3}{8} \times \frac{6}{4}\)
Solution:
(iv) \(\frac{9}{5} \times \frac{3}{5}\)
Solution:
(v) \(\frac{1}{3} \times \frac{15}{8}\)
Solution:
(vi) \(\frac{11}{2} \times \frac{3}{10}\)
Solution:
(vii) \(\frac{4}{5} \times \frac{12}{7}\)
Solution:
Question 3.
Multiply the following fractions:
(i) \(\frac{2}{5} \times 5 \frac{1}{4}\)
Solution:
(ii) \(6 \frac{2}{5} \times \frac{7}{9}\)
Solution:
= \(4 \frac{44}{45}\)
(iii) \(\frac{3}{2} \times 5 \frac{1}{3}\)
Solution:
(iv) \(\frac{5}{6} \times 2 \frac{3}{7}\)
Solution:
(v) \(3 \frac{2}{5} \times \frac{4}{7}\)
Solution:
(vi) \(2 \frac{3}{5} \times 3\)
Solution:
(vii) \(3 \frac{4}{7} \times \frac{3}{5}\)
Solution:
Question 4.
Which is greater :
Solution:
To compare these fractions, we convert unlike fractions to like fractions having same denominator equal to the LCM of 14 and 8.
solution:
Question 5.
Sale 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:
Saili plants 4 saplings, in a row.
The distance between each sapling = \(\frac{3}{4}\) m
[Since the distance between first and second, second and third, third and fourth
Question 6.
Lipika reads a book for \(1 \frac{3}{4}\) everyday. She reads the entire book in 6 days. How many hours in all were required by her to read the book?
Solution:
Number of hours read everyday = \(1 \frac{3}{4}\) hours
Number of days to read whole book = 6 days
Therefore,
Hence, Lipika took 10 \(\frac{1}{2}\) hours to read the entire book.
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:
Distance of car runs in 1 litre = 16km
Distance it will cover using 2 \(\frac{3}{2}\) litres of
Question 8.
(a)
Solution:
Solution: