How much is 200mm in dm?

Answer 1

• mm means "millimeters"
• dm means "decimeters"

Note that "milli-" means "thousandths of a unit" and "deci-" means "tenths of a unit".

This means:

1 m = 1000 mm

1 m = 10 dm

Combine these conversions altogether to get:

1 mm = 1.0 x 10-3 m = 1.0 x 10-2 dm

Another way of interpreting this is 1 dm = 100 mm. Therefore, 200 mm is 2 dm.

Answer 2

Well, honey, 200mm is the same as 20dm. It's like asking how many inches are in a foot - just divide by 10 and you've got your answer. Easy peasy lemon squeezy.