Solve word problems involving addition and subtraction of fractions

Start lessonBegins with Solving word problems fraction addition subtraction · Slides

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Lesson Plan · Guided Notes · Exit Ticket · Re-teach · Homework

Lesson Plan →Objectives, pacing and practice, built from this lesson's brief.
Guided Notes →One page your students fill in and keep.
Exit Ticket →Three items at the end of class. No student accounts.
Re-teach →After an exit ticket: who missed what, and what to do tomorrow.
Homework →Assign practice; it grades itself.

5.NF.A.2

**5.NF.A.2**: Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.

5.NF.A.2: Solve word problems involving addition and subtraction of fractions referring to the same whole, including cases of unlike denominators, e.g., by using visual fraction models or equations to represent the problem. Use benchmark fractions and number sense of fractions to estimate mentally and assess the reasonableness of answers. For example, recognize an incorrect result 2/5 + 1/2 = 3/7, by observing that 3/7 < 1/2.

What you'll learn

Represent a word problem involving fraction addition or subtraction with an equation that uses fractions referring to the same whole
Select and use a visual fraction model (fraction bar, area model, or number line) to represent and solve a word problem involving unlike denominators
Estimate the answer to a fraction addition or subtraction problem using benchmark fractions (0, 1/4, 1/3, 1/2, 2/3, 3/4, 1) before computing
Assess the reasonableness of a computed answer by comparing it to a benchmark estimate, and identify answers that are clearly incorrect
Solve joining, separating, comparing, and part-part-whole word problems involving fractions and mixed numbers with unlike denominators

Review first:

Add and subtract fractions with unlike denominators

Slides

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Solving word problems fraction addition subtraction

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Practice

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Exercise

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