How much gram(s) equal(s) 200 miligrams?

1. 0.2

The correct option is A 0.2
Gram is the standard unit of mass.

Milligram is 3 steps below the standard unit, i.e., gram.

We need to divide 1 gram by 10 three times to get 1 milligram.

$\therefore \frac{1\text{Gram}}{10\times 10\times 10}=1\text{Milligram}$

$\Rightarrow 200\text{Milligrams}=200\times \frac{1}{10\times 10\times 10}\text{Gram}$
$\Rightarrow 200\text{Milligrams}=0.2\text{Gram}$