4.NF.B.3b

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- 4.NF.B.3aUnderstand addition and subtraction of fractions as joining and separating parts referring to the same whole.
- 4.NF.B.3bDecompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a visual fraction model. Examples: 3/8 = 1/8 + 1/8 + 1/8 ; 3/8 = 1/8 + 2/8 ; 2 1/8 = 1 + 1 + 1/8 = 8/8 + 8/8 + 1/8.
- 4.NF.B.3cAdd and subtract mixed numbers with like denominators, e.g., by replacing each mixed number with an equivalent fraction, and/or by using properties of operations and the relationship between addition and subtraction.
- 4.NF.B.3dSolve word problems involving addition and subtraction of fractions referring to the same whole and having like denominators, e.g., by using visual fraction models and equations to represent the problem.

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## 4.NF.B.3b

## Decompose a fraction into a sum of fractions with the same denominator in more than one way, recording each decomposition by an equation. Justify decompositions, e.g., by using a visual fraction model. Examples: 3/8 = 1/8 + 1/8 + 1/8 ; 3/8 = 1/8 + 2/8 ; 2 1/8 = 1 + 1 + 1/8 = 8/8 + 8/8 + 1/8.

7 Lesson(s)

### Teresa's Pizza (Fraction Decomposition)

4th Grade Math »
Unit: Fractions

4th Grade Math »
Unit: Fractions

### Improper Fractions and Mixed Numbers

4th Grade Math »
Unit: Number & Operations-Fractions

4th Grade Math »
Unit: Number & Operations-Fractions

### Exploring Unit Fractions 1/5, 1/6, 1/7

4th Grade Math »
Unit: Fractions

4th Grade Math »
Unit: Fractions

### Decomposing and Composing Mixed Fractions

4th Grade Math »
Unit: Number & Operations-Fractions

4th Grade Math »
Unit: Number & Operations-Fractions

### Understanding Composing and Decomposing: Day 1

4th Grade Math »
Unit: Fractions 2: Addition and Subtraction Concepts/ Mini unit

4th Grade Math »
Unit: Fractions 2: Addition and Subtraction Concepts/ Mini unit

Big Idea:

#### Virtual Manipulatives is a dynamite ap that helps students quickly understand the composition and decomposition of fractions. This first day is an introduction and is just the right lesson to get them started at this Common Core Concept!

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Common Core Math

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### HS Number & Quantity

### HS Algebra

### HS Functions

### HS Geometry

### Kindergarten

### First Grade

### Second Grade

### Third Grade

### Fourth Grade

### Fifth Grade

### Sixth Grade

### Seventh Grade

### Eighth Grade

### Ninth and Tenth Grade

### Kindergarten

### First grade

### Second grade

### Third Grade

### Fourth grade

### Fifth grade

### Middle School

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

HS Number & Quantity

HS Algebra

HS Functions

HS Geometry

Kindergarten

First Grade

Second Grade

Third Grade

Fourth Grade

Fifth Grade

Sixth Grade

Seventh Grade

Eighth Grade

Ninth and Tenth Grade

Kindergarten

First grade

Second grade

Third Grade

Fourth grade

Fifth grade

Middle School