By rounding each term to a whole number, estimate five and four-fifths divided by two and a half.
We have the expression five and four-fifths divided by two and a half. We need to round each of these terms to their nearest whole number. Four-fifths is almost a whole. It’s almost five-fifths. And that means we would round five and four-fifths up. Instead of having five and four-fifths, we would round to six.
Two and a half is exactly halfway between two and three, but our rules for rounding tell us if it’s halfway we round up. So we round two and a half up to three. And then we say six divided by three equals two. We can estimate that five and four-fifths divided by two and a half would be equal to around two.