There are 0.1 decimeters (dm) in 1 millimeter (mm). This can be derived from the fact that there are 10 millimeters in 1 centimeter, and 10 centimeters in 1 decimeter. Therefore, to convert millimeters to decimeters, you divide by 10 twice, resulting in 1 mm being equal to 0.1 dm.
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1 cm =10 mm 10 cm = 1 dm 1 dm = 100 mm Scroll down to related links and look at "Conversions of length (distance) units".
If you are referring to the unit decimeters in there would be
10 CM = one decimeter
1 dm is equal to 100 mm (as 1 dm = 10 cm 1 cm = 10 mm)
100, you move the decimal places to the right two.
There are 3250 mm in 32.5 dm. To convert decimeters (dm) to millimeters (mm), you multiply by 100.
There are 1.7 decimeters (dm) in 17 millimeters (mm).
There are 70 meters in 7000 decimeters (dm) because 1 dm is equivalent to 0.1 meters. So, you simply multiply 7000 dm by 0.1 m/dm to get 700 m.