# Question #29e52

Jan 12, 2018

$\text{280 mm}$

#### Explanation:

The order is such:

$\text{dm " > " cm " > " mm}$

$\text{1 dm = 10 cm = 100 mm}$

From this, you know that

$\text{1 dm = 100 mm}$

In other words, to go from $\text{dm}$ to $\text{mm}$ you must multiply the number of $\text{dm}$ by $100$.

Knowing this, we do $\text{2.8 dm} \times 100$, which gives you $\text{280 mm}$.