What fraction of 1kg is 600g?

6/10- 'cause the k in kg means 1000 so it means 1000g so the fraction is 600/1000 but you can cut it down by dividing both sides by the same thing so you can divide both of them by 10 which makes 60/100 but then they still have some zeros on the end so you can divide it by 10 again which makes 6/10.