If the doctor orders 1.5 grams of medicine, how many milligrams is that?

To convert grams to milligrams, it is essential to know the relationship between the two units. One gram is equal to 1000 milligrams. Therefore, to convert grams to milligrams, you multiply the number of grams by 1000.

In this case, the order is for 1.5 grams of medicine. To find out how many milligrams this amount represents, you perform the following calculation:

1.5 grams × 1000 milligrams/gram = 1500 milligrams.

Thus, 1.5 grams is equivalent to 1500 milligrams, making the correct answer 1500 mg. This understanding of unit conversion is vital in medication calculations, ensuring that the correct dosages are administered in clinical practice.