Decompose Fractions into Sums of Unit Fractions
Videos to help Grade 4 students learn how to decompose fractions into sums of smaller unit fractions using tape diagrams.
Common Core Standards: 4.NF.3b, 4.NF.4a, 4.NF.3a
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Lessons for Grade 4
Common Core For Grade 4
New York State common Core Grade 4 Module 5, Lesson 4
Lesson 4 Concept Development
Problem 1: Use tape diagrams to represent the decomposition of 1/3 as the sum of unit fractions.
Problem 2: Use tape diagrams to represent the decomposition of 1/5 and 2/5 as the sum of smaller unit fractions.
Problem 3: Draw a tape diagram and use addition to show that 2/6 is the sum of 4 twelfths.
1. The total length of each tape diagram represents 1 whole. Decompose the shaded unit fractions as the sum of smaller unit fractions in at least two different ways.
a and b
1. The total length of each tape diagram represents 1 whole. Decompose the shaded unit fractions as the sum of smaller unit fractions in at least two different ways.
c
Lesson 4 Problem Set 2
2. The total length of each tape diagram represents 1 whole. Decompose the shaded fractions as the sum of smaller unit fractions in at least two different ways.
3. Draw and label tape diagrams to prove the following statements.
a. 2/5 = 4/10
b. 2/6 = 4/12
d. 3/4 = 9/12
