How much gram(s) equal(s) 10 miligrams?

1. 0.01

The correct option is A 0.01
Gram is the standard unit of mass.

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

We need to divide given quantity i.e. 10 milligram by 10 three times to convert it into gram.

$\Rightarrow 10\text{Milligrams}=10\times \frac{1}{10\times 10\times 10}\text{Gram}$
$\Rightarrow 10\text{Milligrams}=\frac{1}{10\times 10}\text{Gram}=0.01\text{Gram}$