Answer:
To find out how many milligrams more need to be added to bring the total weight of the supplies to 10,000 mg, we can subtract the current weight from 10,000:
10,000 - 3.69 g = 10,000 - 3,690 mg
Answer:
6,310 mg more need to be added to bring the total weight of the supplies to 10,000 mg.