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Fractions and Decimals

    Exercise 2.5

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7th class > Fractions and Decimals > Exercise 2.5

Exercise 2.5

1. Find:

(i) to (iv)

(i) 0.4 ÷ 2 = × (Enter fraction form)

= (Enter fraction form)

= (Enter decimal form)

(ii) 0.35 ÷ 5 = × (Write in fraction form)

= (Enter fraction form)

= (Enter decimal form)

(iii) 2.48 ÷ 4 = × (Write in fraction form)

= (Enter fraction form)

= (Enter decimal form)

(iv) 65.4 ÷ 6 = × (Write in fraction form)

= (Enter fraction form)

= (Enter decimal form)

(v) to (viii)

(v) 651.2 ÷ 4 = × (Enter fraction form)

= (Enter fraction form)

= (Enter decimal form)

(vi) 14.49 ÷ 7 = × (Enter fraction form)

= (Enter simplified fraction form)

= (Enter decimal form)

(vii) 3.96 ÷ 4 = × (Enter fraction form)

= (Enter simplified fraction form)

= (Enter decimal form)

(viii) 0.80 ÷ 5 = × (Enter fraction form)

= (Enter fraction form)

= (Enter decimal form)

2. Find:

(i)-(iv)

(i) 4.8 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

(ii) 52.5 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

(iii) 0.7 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

(iv) 33.1 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

(v)-(vii)

(v) 272.23 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

(vi) 0.56 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

(vii) 3.97 ÷ 10 = × = (Enter fraction form)

= (Enter decimal form)

3. Find:

(i)-(iii)

(i) 2.7 ÷ 100 = × = (Enter fraction form)

= (Enter decimal form)

(ii) 0.3 ÷ 100 = × = (Enter fraction form)

= (Enter decimal form)

(iii) 0.78 ÷ 100 = × = (Enter fraction form)

= (Enter decimal form)

(iv)-(vi)

(iv) 432.6 ÷ 100 = × = (Enter fraction form)

= (Enter decimal form)

(v) 23.6 ÷ 100 = × = (Enter fraction form)

= (Enter decimal form)

(vi) 98.53 ÷ 100 = × = (Enter fraction form)

= (Enter decimal form)

4. Find:

(i)-(ii)

(i) 7.9 ÷ 1000 = × = (Enter fraction form)

= (Enter decimal form)

(ii) 26.3 ÷ 1000 = × = (Enter fraction form)

= (Enter decimal form)

(iii)-(v)

(iii) 38.53 ÷ 1000 = × = (Enter fraction form)

= (Enter decimal form)

(iv) 128.9 ÷ 1000 = × = (Enter fraction form)

= (Enter decimal form)

(v) 0.5 ÷ 1000 = × = (Enter fraction form)

= (Enter decimal form)

5. Find:

(i)-(iv)

(i) 7 ÷ 3.5 = × (Enter fraction form) = (Enter answer in decimal)

(ii) 36 ÷ 0.2 = × (Enter fraction form) = (Enter answer in decimal)

(iii) 3.25 ÷ 0.5 = × (Enter fraction form) = (Enter answer in decimal)

(iv) 30.94 ÷ 0.7 = × = (Enter fraction form)

= (Enter answer in decimal)

(v)-(ix)

(v) 0.5 ÷ 0.25 = × = (Enter fraction form)

= (Enter answer in decimal)

(vii) 7.75 ÷ 0.25 = × = (Enter fraction form)

= (Enter answer in decimal)

(viii) 76.5 ÷ 0.15 = × = (Enter fraction form)

= (Enter answer in decimal)

(ix) 37.8 ÷ 1.4 = × = (Enter fraction form)

= (Enter answer in decimal)

(x) 2.73 ÷ 1.3 = × = (Enter fraction form)

= (Enter answer in decimal)

6.A vehicle covers a distance of 43.2 km in 2.4 litres of petrol. How much distance will it cover in one litre of petrol?

Solution:

By using unitary method, we can simply 43.2 by 2.4 to get how much distance will the vehicle cover in 1 liter of petrol.

Distance covered in 2.4 litre of petrol = km

Distance covered in 1 litre of petrol = /

= × (Enter the fraction form)

= km

Thus, it covers a distance of 18 km in 1 liter of petrol.