Page 57 - Mathematics_Std_4

Conversion of large metric units of length into small units
The measurements of length can be converted from large metric
units to small units. The relationships of metric units of length

are used in converting the units according to the needs. Use
FOR ONLINE READING ONLY
multiplication (×) method when converting larger units to smaller
units.

Example 1

Convert 3 m into centimetres.
Solution

Use the relationship between metre and centimetre.

1 m = 100 cm
3 m = 100 × 3 cm

= 300 cm

Therefore, 3 m is equal to 300 cm.

Example 2

Convert 5 km 250 m into metres.

Solution

Use the relationship between kilometre and metre.
1 km = 1000 m

5 km = 1000 × 5 m

= 5000 m
Add 5000 m and 250 m. Thus, 5000 m + 250 m = 5,250 m

Therefore, 5 km 250 m is equal to 5,250 m.

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06/11/2024 17:17:08
MATHEMATICS STD 4 PB 2024.indd 50
MATHEMATICS STD 4 PB 2024.indd 50 06/11/2024 17:17:08