Eric has a two rocks samples. One has a mass of 600 grams and the other has a mass of 1 kilogram. He recorded the total mass as 7 kilogrmaas. Explain what he did wrong? What should be the correct answer in grams?

Answer 1

1 kilogram = 1000 grams
so we have 1000 + 600 = 1,600 grams
or
1.6 kilograms

Answer 2

1 times 123 is 123