Final answer:
To express 12.5 grams as a fraction of 2 kilograms, we need to convert both measurements to the same unit. We can convert 2 kilograms to grams by multiplying it by 1000. Then, we divide the amount of grams we have by 2000 to express 12.5 grams as a fraction of 2000 grams.
Step-by-step explanation:
To express 12.5 grams as a fraction of 2 kilograms, we need to convert both measurements to the same unit. Since 1 kilogram is equal to 1000 grams, we can convert 2 kilograms to grams by multiplying it by 1000: 2 kilograms x 1000 grams/kilogram = 2000 grams.
So now we have 12.5 grams and 2000 grams. To express 12.5 grams as a fraction of 2000 grams, we divide 12.5 by 2000: 12.5 grams / 2000 grams = 0.00625.