NCERT Solutions Class 7 Mathematics
Chapter – 2 (Fractions and Decimals)
The NCERT Solutions in English Language for Class 7 Mathematics Chapter – 2 Fractions and Decimals Exercise 2.4 has been provided here to help the students in solving the questions from this exercise.
Chapter : 2 Fractions and Decimals
- NCERT Solution Class 7 Maths Exercise – 2.1
- NCERT Solution Class 7 Maths Exercise – 2.2
- NCERT Solution Class 7 Maths Exercise – 2.3
- NCERT Solution Class 7 Maths Exercise – 2.5
- NCERT Solution Class 7 Maths Exercise – 2.6
- NCERT Solution Class 7 Maths Exercise – 2.7
Exercise – 2.4
1. Find:
(i) 12 ÷
(iv) 4 ÷
Solution –
(i) 12 ÷
= 12 × reciprocal of
= 12 ×
= 4 × 4
= 16
(ii) 14 ÷
= 14 × reciprocal of
= 14 ×
=
(iii) 8 ÷
= 8 × reciprocal of
= 8 ×
=
(iv) 4 ÷
= 4 × reciprocal of
= 4 ×
= 1 ×
(v) 3 ÷
=
= 3 × reciprocal of
= 3 ×
=
(vi) 5 ÷
= 5 ÷
= 5 × reciprocal of
= 5 ×
= 1 ×
2. Find the reciprocal of each of the following fractions. Classify the reciprocals as proper fractions, improper fractions and whole numbers.
(i)
(v)
Solution –
(i)
Reciprocal of
[∵
So, it is an improper fraction.
Improper fraction is that fraction in which numerator is greater than its denominator.
(ii)
Reciprocal of
[∵
So, it is an improper fraction.
Improper fraction is that fraction in which numerator is greater than its denominator.
(iii)
Reciprocal of
[∵
So, it is a proper fraction.
A proper fraction is that fraction in which denominator is greater than the numerator of the fraction.
(iv)
Reciprocal of
[∵
So, it is a proper fraction.
A proper fraction is that fraction in which denominator is greater than the numerator of the fraction.
(v)
Reciprocal of
[∵
So, it is a proper fraction.
A proper fraction is that fraction in which denominator is greater than the numerator of the fraction.
(vi)
Reciprocal of
[∵
So, it is a whole number.
Whole numbers are collection of all positive integers including 0.
(vii)
Reciprocal of
[∵
So, it is a whole number.
Whole numbers are collection of all positive integers including 0.
3. Find:
(i)
(iv)
Solution –
(i)
=
=
=
(ii)
=
=
=
(iii)
=
=
=
(iv)
=
=
=
=
(v)
=
=
=
=
(vi)
=
=
=
=
4. Find:
(i)
(v)
Solution –
(i)
=
=
=
(ii)
=
=
=
(iii)
=
=
=
(iv)
=
=
=
=
(v)
=
=
=
=
(vi)
=
=
=
=
(vii)
=
=
=
=
(viii)
=
=
=
=