250 mm = 2.5 decimeters.
You must multiply millimeter figures by 100 to change to decimeters.
The metric system is based on 10. For example, there are 10 millimeter in one centimeter. 10 centimeter in one decimeter. 10 decimeters in one meter. Therefore, there are 1000 millimeters in one meter.
To convert from decimeters (dm) to millimeters (mm), you need to multiply by 100. Therefore, to convert 0.4 dm to mm, you would multiply 0.4 by 100, which equals 40 mm. So, 0.4 dm is equivalent to 40 mm.
1 square cm = 100 square mm 8 square cm = 100 x 8 = 800 square mm
250 mm = 2.5 decimeters.
990 millimeters is 9.9 decimeters.
2 decimeters ==
1.
0.01 decimetres = 1 mm.
1000mm 1/1000 mm
1 Mm = 10000000 dm
One.
0.5 millimeters=0.005 decimeters
100 mm (milimetres) = 1 dm (decimetre)
1 decimeter = 100 mm (tenth of a meter). 1 inch = 25.4 mm
There are 3250 mm in 32.5 dm. To convert decimeters (dm) to millimeters (mm), you multiply by 100.