Decompose Whole Number Fractions
Videos to help Grade 3 students learn how to decompose whole number fractions greater than 1 using whole
number equivalence with various models.
Common Core Standards: 3.NF.3a,
Plans and Worksheets for Grade 3
Plans and Worksheets for all Grades
Lessons for Grade 3
Common Core For Grade 3
New York State Common Core Math Module 5, Grade 3, Lesson 26
Antonio works on his project for 4 thirds of an hour. His mom tells him that he must spend another 2 thirds
hour on it.
Draw number bonds and a number line with copies of thirds to show how long Antonio worked altogether.
Use number bonds to decompose fractions.
1. Partition the number line to show the unit fractions. Then draw number bonds with copies of 1 whole for
the circled whole numbers.
2. Write the fraction that names the whole numbers for each unit fraction. The first one has been done for
3. Rider dribbles the ball down 1/3 of the basketball court on the first day of practice. Each day after that he
dribbles 1/3 of the way more than he did the day before.
Draw a number line to represent the court. Partition the number line to represent how far Rider
dribbles on Day 1, Day 2, and Day 3 of practice. What fraction of the way does he dribble on Day 3?
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