Kilometres and Metres

What are kilometre (kilometer) and metre (meter)?

Kilometre (km) is another unit of length. We use kilometre to measure long distances.

1 km  =  1000 m
Or,
1000 m  =  1 km

1. Richard visited his grandmother who lives 1 km 630 m away from his house.
Express this distance in metres.

We know,
1 km  =  1000 m

Hence,
1 km 630 m
=  1 km  +  630 m
=  1000 m  +  630 m
=  1630 m

The distance is 1630 m.

2. What is 7 km 90 m in metres?

We know,
1 km  =  1000 m

So,
7 km  =  7000 m

Hence,
7 km 90 m
=  7 km  +  90 m
=  7000 m  +  90 m
7090 m

3. Stephanie is going to the mall.
The mall is 4059 m away.
What is this distance in kilometres and metres?

We know,
1000 m  =  1 km

So,
4000 m  =  4 km

Hence,
4059 m
=  4000 m  +  59 m
=  4 km  +  59 m
=  4 km 59 m

The distance is 4 km 59 m.