Question

Kira needs 3,000 milligrams of zinc for a science experiment. Which expression can be used to determine how many grams of zinc she needs?
A. 1000 ÷ 3000
B. 1000 × 3000
C. 3000 ÷ 1000
D. 3000 × 100

Answer 1

C is the correct answer.

Answer 2

We know $1000\;mg=1\;g$. Therefore, 3000 mg of Zinc is equivalent to

$\frac{3000\;mg}{1000} =3000/1000=3\;g$.

Thus the correct answer is (C).