This Problem Set is a part of the Lesson 30, Unit 5, Grade 4. In this lesson, students use unit form and the number line to add a mixed number and a fraction having sums of fractional units less than or equal to 1. Next, students complete a unit of one to add a mixed number and a fraction then show on a number line. Finally, students add a mixed number and a fraction with sums of fractional units greater than 1.