Page 126 - Math Skill - 5

124 Maths

Example 3: Leena bought 12 m cloth and used 3 m 65 cm of it for her dress. How much cloth
remains unused?

Solution: Total cloth = 12 m m cm
Cloth used for dress = 3 m 65 cm 1 2 0 0

Length of remaining unused cloth piece = 12 m – 3 m 65 cm – 3 6 5
= 8 m 35 cm 8 3 5

Example 4: Monika walks 3 km 750 m every day. How much distance does she cover in
a week? km m
Solution: Distance covered in 1 day = 3 km 750 m 5 3

Distance covered in 7 days = 3 km 750 m × 7 × 3 7 5 0
7
= 26 km 250 m 2 6 2 5 0

Example 5: Sumit bought 14 bags of rice weighing 17 kg 150 g. If all the bags weigh equally,
what is the weight of each bag?

Solution: Weight of 14 bags of rice = 17 kg 150 g = 17150 g
Weight of each bag = 17150 g ÷ 14

1225
14 17150

14
3 1 Fact-o-meter
2 8 � In case of division, convert the dividend
35 into lower unit and then divide.
28
70
70

0 Hence, weight of each bag is 1225 g = 1 kg 225 g

Example 6: A bath tub can hold 70 L of water in it. It has 24 L 650 mL of water in it. How much
more water can be poured into it?

Solution: Capacity of bath tub = 70 L
Quantity of water already in it = 24 L 650 mL

Quantity of water that can be poured more = 70 L – 24 L 650 mL

L mL
7 0 0 0 0
– 2 4 6 5 0

4 5 3 5 0
Hence, 45 L 350 mL of more water can be poured.