Lesson: Adding Proper Fractions When Denominators Are Multiples: Sums at Most One Mathematics • 5th Grade

In this lesson, we will learn how to add two proper fractions whose denominators are multiples of the same number first by using models and then by writing equivalent fractions over the same denominator.

Lesson Plan

Students will be able to

understand that related fractions are fractions where the denominator of one is a multiple of the denominator of the other,
represent the addition of related fractions using models,
add related unit fractions by finding a common denominator,
add related nonunit fractions within one whole.

Lesson Worksheet

Q1:

Which of the following addition sentences describes the figure shown?

Q2:

While walking her dog, Emma walked of a mile to the park and then of a mile inside it. Given that each of the strips below represents 1 mile, which of the strips shows the total number of miles Emma walked?

Q3:

Which of the following expressions is equal to ?