Lesson: Subtracting Mixed Numbers When Denominators Are Multiples Mathematics • 5th Grade

In this lesson, we will learn how to subtract two mixed numbers whose denominators are multiples of the same number, including calculations where we have to break apart a whole.

Lesson Plan

Students will be able to

subtract one mixed number from another when the denominator of one is a multiple of the denominator of the other,
represent calculations with models including bar models,
subtract by breaking apart one of the mixed numbers and regrouping if necessary,
subtract by converting to improper fractions,
decide whether one method is easier than another.

Lesson Worksheet

Q1:

Calculate the following: .

Q2:

Fill in the blank: .

Q3:

The biggest zucchini from Jacob’s farm is pounds, which is pounds more than the average weight of zucchinis from his farm. What is the average weight of zucchinis from his farm?