4.NF.B.3 Worksheets: Add and Subtract Fractions
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4.NF.B.3 (Number and Operations: Fractions): Add and subtract fractions and mixed numbers with like denominators.
About this standard
The big idea is that a fraction is a sum of unit fractions (3/4 = 1/4 + 1/4 + 1/4), so only the numerators change when the denominators match. Fraction strips make this concrete. Practice with Adding and Subtracting Fractions With Like Denominators and Adding and Subtracting Mixed Numbers; unlike denominators come in 5.NF.A.1.
Worksheets for 4.NF.B.3
Improper Fractions and Mixed Numbers
Adding and Subtracting Fractions With Like Denominators
Adding and Subtracting Mixed Numbers
Mixed Number Word Problems