Question

Which value is equivalent to 7.2 kilograms?
720 grams
7,200 grams
72,000 grams
720 milligrams
7,200 milligrams

Answer 1

1 000 g = 1 kg
1 000 000 mg = 1 kg
\[ 7.2 kg = \frac{ 1 000 g }{ 1 kg } = \frac{ 1 000 000 mg }{ 1 kg }\]
1 kg is at the denominator to be able to cancel out the unit kg so you'll be left with g (grams) or mg (milligrams). Following the formula, you need to multiply 7.2 by either 1 000 (grams) or 1 000 000 (milligrams). What'd you get?

Answer 2

Sorry. It should be times not equal.


\[7.2kg \times \frac{ 1 000 g}{ 1 kg } = ?\]
OR
\[7.2kg \times \frac{ 1 000 000 mg}{ 1 kg } = ?\]