Mike has 3 1/2 ounces of sugar to put in his coffee. If he actually only puts in 1 5/9 ounces of sugar, about how much sugar does he have left? estimating fractions
First you have to make the 1/2 and 5/9 common denominators, which would be 10/18 and 9/18 then you simply just subtract 3 9/18 and 1 10/18 to get 1 17/18.