how do you convert 1000 milligrams to grams ?

A gram = 1,000 milligrams.

thanks':)

and how do you Convert 0.257 grams to centigrams ?

1 gram = 100 centigrams.

Multiply 0.257 by 100.

To convert milligrams (mg) to grams (g), you need to remember that there are 1,000 milligrams in 1 gram. Here's how you can do it:

Step 1: Write down the given value, which is 1000 milligrams (1000 mg).

Step 2: Use the conversion factor, which is 1 gram (g) = 1000 milligrams (mg). This means that to convert milligrams to grams, you divide the value in milligrams by 1000.

Step 3: Apply the conversion by dividing the given value by 1000:
1000 mg / 1000 = 1 gram (g)

So, 1000 milligrams (mg) is equal to 1 gram (g).