3000mm equals 30dm. (divide mm by 100 to get decimeters)
30 decimeters is equal to 3000 millimeters.
0.01 decimetres = 1 mm.
1000mm 1/1000 mm
1 millimeter = 0.01 decimeters
250 mm = 2.5 decimeters.
1 dm equal 100 mm.
508 mm
10 mm =1cm
990 millimeters is 9.9 decimeters.
200
20