Addition of mixed fractions quiz online. This is a math quiz online in which students learn how to add mixed fractions. Mixed fractions are fraction values that have a whole number to the right and a fraction value to the left. Usually, it is advisable to convert the mixed fraction into an improper fraction before you start adding two fractions. There are two ways of adding fractions but the outcomes are always the same. This quiz is a MCQ test online and as students take it, they get feedback instantly. Teachers and parents can use this quiz to supplement their student’s regular course. Teach kids in 3rd, 4th, 5th, and 6th grade to add mixed fractions.