Videos and solutions to help Grade 4 students learn how to subtract a fraction from a mixed number.

Topic F: Addition and Subtraction of Fractions by Decomposition

Common Core Standards: 4.NF.3c,
4.NF.3d,
4.MD.4,
4.MD.2

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Lessons for Grade 4

Common Core For Grade 4

Lesson 32 Concept Development

Problem 1: Subtract a fraction from a mixed number by counting back.

Problem 2: Subtract a fraction less than 1 from a whole number by decomposing the subtrahend.

Problem 3: Decompose the total to take out 1 when subtracting a fraction from a mixed number when there are not enough fractional units.

1. Subtract. Model with a number line or the arrow way.

2. Use decomposition to subtract the fractions. Model with a number line or the arrow way.

3. Decompose the total to subtract the fractions.

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