#### Answer

The total weight is 1550g.
The net weight is 1500g.
The weight of one sheet of paper is 3g.

#### Work Step by Step

Move the decimal to convert mg to g.
$3000mg=3g$
Multiply by the number of sheets to find the net weight.
$3g\times500=1500g$
Add the weight of the packaging to find the total weight.
$1500g+50g=1550g$