Exercise 2.5
1. Find:
(i) to (iv)
(i) 0.4 ÷ 2 =
=
=
(ii) 0.35 ÷ 5 =
=
=
(iii) 2.48 ÷ 4 =
=
=
(iv) 65.4 ÷ 6 =
=
=
(v) to (viii)
(v) 651.2 ÷ 4 =
=
=
(vi) 14.49 ÷ 7 =
=
=
(vii) 3.96 ÷ 4 =
=
=
(viii) 0.80 ÷ 5 =
=
=
2. Find:
(i)-(iv)
(i) 4.8 ÷ 10 =
=
(ii) 52.5 ÷ 10 =
=
(iii) 0.7 ÷ 10 =
=
(iv) 33.1 ÷ 10 =
=
(v)-(vii)
(v) 272.23 ÷ 10 =
=
(vi) 0.56 ÷ 10 =
=
(vii) 3.97 ÷ 10 =
=
3. Find:
(i)-(iii)
(i) 2.7 ÷ 100 =
=
(ii) 0.3 ÷ 100 =
=
(iii) 0.78 ÷ 100 =
=
(iv)-(vi)
(iv) 432.6 ÷ 100 =
=
(v) 23.6 ÷ 100 =
=
(vi) 98.53 ÷ 100 =
=
4. Find:
(i)-(ii)
(i) 7.9 ÷ 1000 =
=
(ii) 26.3 ÷ 1000 =
=
(iii)-(v)
(iii) 38.53 ÷ 1000 =
=
(iv) 128.9 ÷ 1000 =
=
(v) 0.5 ÷ 1000 =
=
5. Find:
(i)-(iv)
(i) 7 ÷ 3.5 =
(ii) 36 ÷ 0.2 =
(iii) 3.25 ÷ 0.5 =
(iv) 30.94 ÷ 0.7 =
=
(v)-(ix)
(v) 0.5 ÷ 0.25 =
=
(vii) 7.75 ÷ 0.25 =
=
(viii) 76.5 ÷ 0.15 =
=
(ix) 37.8 ÷ 1.4 =
=
(x) 2.73 ÷ 1.3 =
=
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
Distance covered in 2.4 litre of petrol =
Distance covered in 1 litre of petrol =
=
=
Thus, it covers a distance of 18 km in 1 liter of petrol.