1m= 100cm

1dm= 10cm

1 km =1000m

1 km = 10000 km

1 km = 100000 cm

Length unit: mm, cm, decimeter, meter.

1mm- refill thickness of ordinary pencils.

1cm- nail width

1 decimeter-the distance from the index finger to the root of the thumb after the hand is spread out.

1m-the distance between hands after the arm is straight.

1 m = 10 decimeter =100 cm =1000 mm.

1 km =1000m