Haryana State Board HBSE 7th Class Maths Solutions Chapter 2 Fractions and Decimals Ex 2.7 Textbook Exercise Questions and Answers.
Haryana Board 7th Class Maths Solutions Chapter 2 Fractions and Decimals Exercise 2.7
Question 1.
Find :
(i) 0.4 ÷ 2
(ii) 0.35 ÷ 5
(iii) 2.48 ÷ 4
(iv) 65.4 ÷ 6
(v) 651.2 ÷ 4
(vi) 14.49 ÷ 7
(vii) 3.96 ÷ 4
(viii) 0.80 ÷ 5
Solution:
(i) 0.4 ÷ 2 = 0.2
(ii) 0.35 ÷ 5 = 0.07
(iii) 2.48 ÷ 4 = \(\frac{218}{400}=\frac{62}{100}\) = 0.62
(iv) 65.6 ÷ 6 = 10.93
(v) 651.2 ÷ 4 = 162.8
(vi) 14.49 ÷ 7 = 2.7
(vii) 3.96 ÷ 4 = 0.99
(viii) 0.80 ÷ 5 = 0.16
Question 2.
Find:
(i) 4.8 ÷ 10
(ii) 52.5 ÷ 10
(iii) 0.7 ÷ 10
(iv) 33.1 ÷ 10
(v) 272.23 ÷ 10
(vi) 0.56 ÷ 10
(vii) 3.97 ÷ 10
Solution:
(i) 4.8 ÷ 10 = 0.48
(ii) 52.5 ÷ 10 = 5.25
(iii) 0.7 ÷ 10 = 0.07
(iv) 33.1 ÷ 10 = 3.31
(v) 272.23 ÷ 10 = 27.223
(vi) 0.56 ÷ 10 = 0.056
(vii) 3.97 ÷ 10 = 0.397
Question 3.
Find :
(i) 2.7 ÷ 100
(ii) 0.3 ÷ 100
(iii) 0.78 ÷ 100
(iv) 432.6 ÷ 100
(v) 23.6 ÷ 100
(vi) 98.53 ÷ 100
Solution:
(i) 2.7 ÷ 100 = \(\frac{2.7}{100}\) = 0.027
(ii) 0.3 ÷ 100 = 0.003
(iii) 0.78 ÷ 100 = 0.0078
(iv) 432.6 ÷ 100 = 4.326
(v) 23.6 ÷ 100 = 0.236
(vi) 98.53 ÷ 100 = 0.9853
Question 4.
Find:
(i) 7.9 ÷ 1000
(ii) 26.3 ÷ 1000
(iii) 38.53 ÷ 1000
(iv) 128.9 ÷ 1000
(v) 0.5 ÷ 1000
Solution:
(i) 7.9 ÷ 1000 = \(\frac{79}{1000}\) = 0.0079
(ii) 26.3 ÷ 1000 = \(\frac{263}{1000}\) = 0.0263
(iii) 38.53 ÷ 1000 = \(\frac{38.50}{10000}\) = 0.03850
(iv) 128.9 ÷ 1000 = \(\frac{1289}{10000}\) = 0.1289
(v) 0.5 ÷ 1000 = \(\frac{05}{10000}\) = 0.0005
Question 5.
Find :
(i) 7÷ 3.5
(ii) 36 ÷ 0.2
(iii) 3.25 ÷ 0.5
(iv) 30.94 ÷ 0.7
(v) 0.5 ÷ 0.25
(vi) 7.75 ÷ 0.25
(vii) 76.5 ÷ 0.15
(viii) 37.8 ÷ 1.4
(ix) 2.73 ÷ 1.3
Solution:
(i) 7÷ 3.5 = \(\frac{70}{35}\) = 2
(ii) 36 ÷ 0.2 = \(\frac{360}{2}\) = 180
(iii) 3.25 ÷ 0.5 = \(\frac{325}{50}\) = \(\frac{65}{10}\) = 6.5
(iv) 30.94 ÷ 0.7 = \(\frac{3094}{700}=\frac{442}{100}\) = 4.42
(v) 0.5 ÷ 0.25 = \(\frac{50}{25}\) = 2
(vi) 7.75 ÷ 0.25 = \(\frac{775}{25}\) = 31
(vii) 76.5 ÷ 0.15 = \(\frac{7650}{15}\) = 510
(viii) 37.8 ÷ 1.4 = \(\frac{378}{14}\) = 27
(ix) 2.73 ÷ 1.3 = \(\frac{2.73}{130}\) = 21
Question 6.
A vehicle covers a distance of 43.2 km. in 2.4 litres of petrol. How much distance will it travel in one litre of petrol ?
Solution:
∵ 2.4 litres of petrol a vehicle covers a distance of 43.2 km.
∴ 1 litre of petrol a vehicle covers
\(=\frac{43.2}{2.4} \mathrm{~km}=\frac{432}{24}=\frac{108}{6}=18 \mathrm{~km}\)