To round a decimal first you need to find what you need to round it by. Tenths place, hundredths place, thousandths place, and t
hen you need to find the number to the right of it. If you are rounding to the hundredths place in 0.687, than you would look at 8 and see if it is above or below 5. If above, 0.687 turns into 0.7. If below it turns into 0.6. In this case it is higher so 0.7.
