Question

Which expression shows how to round each number in the expression below to the nearest half?

seven and seven-eighths plus two and one-half plus four and one-eighth

seven plus two plus four

seven plus two and one-half plus four and one-half

eight plus two and one-half plus four and one-half

eight plus two and one-half plus four

Answer 1

Seven and seven-eighths is pretty close to eight. Two and a half is already rounded to the nearest half, and four and an eighth is just a touch over four.

If you add the numbers in the last option, you will get the exact answer, since the first was rounded up by and eighth, and the third was rounded down by the same amount.