To play this game, you have to match the kilometres,meters,millimetres and centimetres. It was easy because I just needed to click 2 meters and 2000 meters because I know that 2 meters equals 2000 meters. It was a little bit challenging because there was a time limit. I reached level 6 on Metric Length.
Here is the link to play this game.
http://www.sheppardsoftware.com/mathgames/measurement/MeasurementMeters.htm
