Is 75 cm greater or 7.9 dm?

Well, let's think about this in a calm and happy way. 75 cm is actually greater than 7.9 dm. You see, 1 decimeter (dm) is equal to 10 centimeters (cm), so 7.9 dm would be 79 cm. So, 75 cm is less than 79 cm, making it smaller than 7.9 dm. Just remember, there are happy little conversions to help us along the way.