Subtract 750 grams from 3 kilograms

1 kg = 1000 g

3,000 - 750 = _______ g

1 kg = 1000 g

3 kg = 3000 g

3000 g - 750 g = 2250 g = 2 kg 250 g

To subtract 750 grams from 3 kilograms, we need to convert the units to the same base unit. In this case, we'll convert both 3 kilograms and 750 grams to grams.

1 kilogram is equal to 1000 grams. So, 3 kilograms can be converted to grams by multiplying 3 by 1000:
3 kilograms = 3 * 1000 grams = 3000 grams

Now, we can subtract 750 grams from 3000 grams:
3000 grams - 750 grams = 2250 grams

Therefore, subtracting 750 grams from 3 kilograms gives us 2250 grams.