decimeter = dm centimeter = cm meter = m kilometer = km
You can't convert that.
With 10 decimeters to a meter, 600 decimeter is a lot more than 6 m.
There are 10 cm in a dm and so a decimeter is 1/10 of a meter
1 metre = 1000 millimetres4 metres = 4000 millimetres
By dividing the number in milimeters by 1000.
1 m = 10 decimeter
Divide by ten.
10
decimeter
decimeter = dm centimeter = cm meter = m kilometer = km
Multiply by 1000: 4000 mm = 4 m
The prefix milli- means "one thousandth" so to convert 4 m to millimeters you would multiply by 1000. 4 m = 4000 millimeters.
Decimeter is a measure of length, liter is a measure of volume. You can't convert those.
(so 100 millimetres make 1 decimeter) So take the number of millimeters and multiply by 0.01 (or divide by 100) to get the number of decimetres.
You can't convert that.
Divide by 1000.