Page 103 - Maths Class 04

Conversion of Kilometres into Metres

Example : Convert into metres.

a. 6 km b. 60 km c. 8 km 250 m

d. 25 km 217 m

Solution : a. 6 km b. 60 km

1 km = 1000 m 1 km = 1000 m

6 km = 6 × 1000 m 60 km = 60 × 1000 m

= 6000 m = 60000 m

c. 8 km 250 m d. 25 km 217 m

1 km = 1000 m 1 km = 1000 m

= 8 × 1000 + 250 m = 25 × 1000 m + 217 m

= 8000 m + 250 m = 25000 m + 217 m

= 8250 m = 25217 m

Conversion of Centimetres into Metres

Example : Convert into metres.

a. 480 cm b. 920 cm

Solution : a. 480 cm = 400 cm + 80 cm

\ 100 cm = 1 m
= (400 ÷ 100) m + 80 cm

= 4 m + 80 cm

= 4 m 80 cm

b. 920 cm = 900 cm + 20 cm

\ 100 cm = 1 m

= (900 ÷ 100) m + 20 cm

= 9 m + 20 cm

= 9 m 20 cm

Mathematics-4 103