1. Knowing Our Numbers Worksheet With Answers Page 10
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25Example 17: To stitch a shirt, 2 m 15 cm cloth is needed. Out of 40 m cloth, how many shirts can
be stitched and how much cloth will remain?
215 4,000 18
Solution:
Cloth required to stitch a shirt = 2 m 15 cm = 215 cm
(3 1 m = 100 cm)
– 215
Total cloth available for stitching shirts = 40 m = 4,000 cm
1,850
Number of shirts that can be stitched
– 1,720
130
= 4,000 cm ÷ 215 cm
Since the quotient is 18 and remainder is 130 therefore, 18 shirts
can be stitched and 130 cm or 1 m 30 cm cloth will remain.
Example 18: A medicine is packed in boxes, each weighing 5 kg 300 g. How many such boxes can
be loaded in a van, which cannot carry beyond 800 kg?
Solution:
Weight of each box of medicine = 5 kg 300 g = 5,300 g
(3 1 kg = 1,000 g)
Maximum load which the van can carry = 800 kg
53 8,000 150
= 8,00,000 g
– 53
Number of boxes which can be loaded in the van
270
– 265
= 8,00,000 ÷ 5,300 = 8,000 ÷ 53
50
Since the quotient is 150 and remainder is 50 therefore, not
more than 150 medicine boxes can be loaded in the van.
Example 19: The distance between the school and the
house of a student is 1 km 875 m. Everyday
she walks both ways. Find the total distance
covered by her in six days.
Solution:
Distance between the school and the house = 1 km 875 m
= 1,875 m
(3 1 km = 1,000 m)
Distance covered by the student everyday = 1,875 × 2
3,750
= 3,750 m
×
6
22,500
Total distance covered in 6 days = 3,750 × 6 = 22,500 m
Therefore, the total distance covered in 6 days = 22 km 500 m
Example 20: A large tanker of capacity 15 kL 500 L is full of petrol. How many petrol pumps can
be supplied each with a capacity of 720 L of petrol?
Solution:
Total petrol in the tanker = 15 kL 500 L = 15,500 L
(3 1 kL = 1,000 L)
Capacity of each petrol pump = 720 L
Number of petrol pumps that can be supplied with petrol
72 1,550 21
= 15,500 ÷ 720
– 144
= 1,550 ÷ 72
110
– 72
Since the quotient is 21 and remainder is 38 therefore, 21 petrol
38
pumps can be supplied with petrol.
10
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