How do you write 210 meters in kilometers?
210 m = 0.21 km
To convert from m to km, divide by 1000.
Your 81.2 kilometers can be converted to meters by realizing that there are 1,000 meters in a kilometer. That makes 81.2 kilometers equal to 81,200 meters. As there are 1,000 meters in 1 kilometer, to convert kilometers to meters, multiply the number of kilometers by 1,000 to get your answer in meters.
There are 1,000 meters in a kilometer. So, to convert meters to kilometers, we have to divide the meters by 1,000. One meter is 1/1,000th of a kilometer, so to convert meters to kilometers, we divide by 1,000. Let's do just one example. 500 meters is how many kilometers? [We have to divide 500 by 1,000 to get an answer.] 500 meters/1,000 = 0.5 kilometers [500 meters is 0.5 kilometers]