If you have 100 kilograms of gold how many grams would this be?

1000 kg equals 100000 g...Sorry, that is incorrect.

"Kilo" is Greek for "thousand"

So 1000kilograms is 1000x1000grams = one million grams.

The correct answer to the original question "how many grams are there in 100 kilograms" = 100 x 1000 grams = 100,000 grams (one hundred thousand grams.