NCERT Solutions for Class 7 Maths Exercise 2.5
NCERT Solutions for Class 7 Maths Exercise 2.5 Chapter 2 Fractions and Decimals in simple solutions are given here. Class 7 Fractions and Decimals NCERT Exercise 2.5 of NCERT Solutions for Maths Class 7 Chapter 2 contains all the topics containing the basic information of Fractions. Class 7 Fractions and Decimals NCERT Exercise 2.5 provide students the study of fractions including proper, improper and mixed fractions as well as their addition and subtraction. NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals ex 2.5 provides necessary material for solving different range of questions that test the students capability of understanding the concepts. It also helps the students of CBSE Class 7 Maths students
Question 1.
Which is greater?
(i) 0.5 or 0.05
Solution:-
By comparing whole number, 0 = 0
By comparing the tenths place digit, 5 > 0
∴ 0.5 > 0.05
(ii) 0.7 or 0.5
Solution:-
By comparing whole number, 0 = 0
By comparing the tenths place digit, 7 > 5
∴ 0.7 > 0.5
(iii) 7 or 0.7
Solution:-
By comparing whole number, 7 > 0
∴ 7 > 0.7
(iv) 1.37 or 1.49
Solution:-
By comparing whole number, 1 = 1
By comparing the tenths place digit, 3 < 4
∴ 1.37 < 1.49
(v) 2.03 or 2.30
Solution:-
By comparing whole number, 2 = 2
By comparing the tenths place digit, 0 < 3
∴ 2.03 < 2.30
(vi) 0.8 or 0.88
Solution:-
By comparing whole number, 0 = 0
By comparing the tenths place digit, 8 = 8
By comparing the hundredths place digit, 0 < 8
∴ 0.8 < 0.88
Question 2.
Express as rupees as decimals:
(i) 7 paise
Solution:-
= Rs 1 = 100 paise
= 1 paise = Rs 1/ 100
∴ 7 paise = Rs 7/ 100
= Rs 0.07
(ii) 7 rupees 7 paise
Solution:-
= Rs 1 = 100 paise
= 1 paise = Rs 1/ 100
∴ 7 rupees 7 paise = Rs 7 + Rs 7/ 100
= Rs 7 + Rs 0.07
= Rs 7.07
(iii) 77 rupees 77 paise
Solution:-
= Rs 1 = 100 paise
= 1 paise = Rs 1/ 100
∴ 77 rupees 77 paise = Rs 77 + Rs 77/ 100
= Rs 77 + Rs 0.77
= Rs 77.77
(iv) 50 paise
Solution:-
= Rs 1 = 100 paise
= 1 paise = Rs 1/ 100
∴ 50 paise = Rs 50/ 100
= Rs 0.50
(v) 235 paise
Solution:-
= Rs 1 = 100 paise
= 1 paise = Rs 1/ 100
∴ 235 paise = Rs 235/ 100
= Rs 2.35
Question 3.
(i) Express 5 cm in meter and kilometer
Solution:-
= 1 meter = 100 cm
= 1 cm = 1/ 100 m
= 5 cm = 5/ 100
= 0.05 m
= 1 km = 1000 m
= 1 m = 1/ 1000 km
= 0.05 m = 0.05/ 1000
= 0. 00005 km
(i) Express 35 mm in cm, m and km
Solution:-
= 1 cm = 10 mm
= 1 mm = 1/ 10 cm
= 35 mm = 35/ 10 cm
= 3.5 cm
= 1 meter = 100 cm
= 1 cm = 1/ 100 m
= 3.5 cm = 3.5/ 100 m
= 0.035 m
= 1 km = 1000 m
= 1 m = 1/ 1000 km
= 0.035 m = 0.035/ 1000 km
= 0. 000035 km
