This Problem Set is a part of the Lesson 32, Unit 5, Grade 4. In this lesson, students subtract a fraction from a mixed number by counting back and then model on a number line. Students then decompose the subtrahend with a number bond to subtract a fraction less than 1 from a whole number and then model on a number line. Finally, students use a number bond to decompose the minuend to take out 1 when subtracting a fraction from a mixed number that does not have enough fractional units.