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

\(=\frac{43.2}{2.4} \mathrm{~km}=\frac{432}{24}=\frac{108}{6}=18 \mathrm{~km}\)