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Common Core Standards

Decompose Fractions

Grade: 4th Grade
Standard:

Math.4.NF.3a or 4.NF.B.3.A

Description:

Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.

Standard:

Math.4.NF.3b or 4.NF.B.3.B

Description:

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.

4th Grade Math - Decompose Fractions Lesson
 
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