Page 60 - Mathematics_Std_4

Exercise 2

1. Convert the following measurements into kilometres:
(a) 9000 m (b) 15000 m (c) 6000 m (d) 9750 m
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2. Convert the following measurements into metres:

(a) 2000 cm (b) 150 cm (c) 325 cm (d) 2025 cm

3. Convert the following measurements into centimetres:

(a) 40 mm (b) 100 mm (c) 245 mm (d) 550 mm

Addition of measurements of length
Measurements of the same unit can be added. Mixed
measurements are added after converting them into a common

unit using the relationship between the given units.

Example 1

+ 8 km 3 hm = 6 km 5 hm

Solution Steps
km hm 1. Add hm: 3 hm + = 5 hm 8 hm.

8 3 Write 8 in the hm column.
+ 6 5

8

km hm 2. Add km: 8 km + = 6 km 14 km.
8 3 Write 14 in the km column.

+ 6 5

14 8

Therefore, the answer is 14 km 8 hm.

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06/11/2024 17:17:09
MATHEMATICS STD 4 PB 2024.indd 53
MATHEMATICS STD 4 PB 2024.indd 53 06/11/2024 17:17:09