**Adding and Subtracting Fractions Worksheets** – Free Printable math worksheets with like and unlike denominators.

Adding Fractions: Like Denominators |

Subtracting Fractions: Like Denominators |

Adding Fractions: Unlike Denominators |

Subtracting Fractions: Unlike Denominators |

**CCSS.Math.Content.4.NF.B.3** Understand a fraction a/b with a > 1 as a sum of fractions 1/b.

**CCSS.Math.Content.4.NF.B.3a** Understand addition and subtraction of fractions as joining and separating parts referring to the same whole.

* CCSS.Math.Content.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.*

**CCSS.Math.Content.4.NF.B.3c**Add 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.

**CCSS.Math.Content.4.NF.B.3d**Solve 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.

**CCSS.Math.Content.5.NF.A.1**Add and subtract fractions with unlike denominators (including mixed numbers) by replacing given fractions with equivalent fractions in such a way as to produce an equivalent sum or difference of fractions with like denominators. For example, 2/3 + 5/4 = 8/12 + 15/12 = 23/12. (In general, a/b + c/d = (ad + bc)/bd.)* *

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