Grade 4 · Math · Lesson 19

Add and Subtract Fractions

When two fractions have the same denominator, adding or subtracting them is straightforward: operate on the numerators only and keep the denominator unchanged.

What this lesson teaches

1Add fractions with the same denominator
2Subtract fractions with the same denominator
3Simplify fraction answers to lowest terms
4Solve word problems involving addition and subtraction of fractions

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