Lesson 8 | Fraction Operations | 4th Grade Mathematics

Objective

Decompose and compose non-unit fractions greater than two as a sum of unit fractions, as a sum of non-unit fractions, and as a whole number times a unit fraction.

Lesson Map

Topic A: Building, Adding, and Subtracting Fractions Less Than or Equal to 1

Lesson

Decompose fractions as a sum of unit fractions and as a multiple of a unit fraction.

Standards

4.NF.B.3.B4.NF.B.4.A

Lesson

Decompose fractions as a sum of fractions with the same denominator in more than one way.

Standards

4.NF.B.3.B4.NF.B.4.A

Lesson

Add and subtract fractions within 1 with the same units.

Standards

4.NF.B.3.A4.NF.B.3.C

Lesson

Solve word problems that involve the addition and subtraction of fractions where the total is less than or equal to one.

Standards

4.NF.B.3.D

Topic B: Building, Adding, and Subtracting Fractions Less Than 2

Lesson

Decompose non-unit fractions less than 2 as a sum of unit fractions, as a sum of non-unit fractions, and as a whole number times a unit fraction.

Standards

4.NF.B.3.B4.NF.B.4.A

Lesson

Add and subtract fractions that require regrouping where the total is less than 2.

Standards

4.NF.B.3.A4.NF.B.3.C

Lesson

Add two fractions where one denominator is a multiple of the other using the denominators 2, 3, 4, 5, 6, 8, 10, and 12.

Standards

4.NF.B.3.A4.NF.B.3.C

Topic C: Building, Adding, and Subtracting Fractions Greater Than or Equal to 2

Lesson

Decompose and compose non-unit fractions greater than two as a sum of unit fractions, as a sum of non-unit fractions, and as a whole number times a unit fraction.

Standards

4.NF.B.3.B

Lesson

Convert fractions greater than 1 to mixed numbers.

Standards

4.NF.B.3.B4.NF.B.3.C

Lesson

Convert mixed numbers to fractions greater than 1.

Standards

4.NF.B.3.B4.NF.B.3.C

Lesson

Compare and order fractions greater than 1 using various methods.