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.

 
37 Lesson(s)
   

Problem Solving (Different Operations with Fractions)

5th Grade Math » Unit: Multiplying and Dividing Fractions
5th Grade Math » Unit: Multiplying and Dividing Fractions
Julie Kelley
Tyngsborough, MA
Environment: Suburban
 
Big Idea:

Students put their fraction skills to use to solve problems involving addition, subtraction, and multiplication of fractions.

 
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Resources (15)
 
Reflections (1)
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Fractions: Reviewing the Basics

5th Grade Math » Unit: Adding and Subtracting Fractions
5th Grade Math » Unit: Adding and Subtracting Fractions
Julie Kelley
Tyngsborough, MA
Environment: Suburban
 
Big Idea:

Students have fun with fractions as they connect with prior knowledge of equivalent / simplify / estimation of solutions.

 
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Resources (15)
 
Reflections (2)
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Adding and Subtracting Fractions Day 1

6th Grade Math » Unit: Fraction Operations
6th Grade Math » Unit: Fraction Operations
Andrea Palmer
Somerville, MA
Environment: Urban
 
Big Idea:

If Ashley ate ½ pizza, Tatyana ate 1/3 of a pizza, and Tiffany ate 5/8 of a pizza, how much pizza did they eat altogether? What’s the smallest number of pizzas they ordered? How much was left? Students work to develop strategies for adding and subtracti

 
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unit 4 4 image
   

What Fraction of the Section Does Each Person Own?

6th Grade Math » Unit: Fraction Operations
6th Grade Math » Unit: Fraction Operations
Andrea Palmer
Somerville, MA
Environment: Urban
 
Big Idea:

What fraction of the section of land does each person own? Students use an area model of farmland to determine how much land each person owns.

 
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Resources (28)
 
Reflections (1)
unit 4 2 image
   

Adding and Subtracting Fractions Day 2

6th Grade Math » Unit: Fraction Operations
6th Grade Math » Unit: Fraction Operations
Andrea Palmer
Somerville, MA
Environment: Urban
 
Big Idea:

How would you add 2 ½ and 2/3? How would you find the difference between 2 ½ and 2/3? Students continue to develop strategies for adding and subtracting fractions.

 
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Resources (21)
unit 4 5 image
   

Looking for Patterns + Show What You Know

6th Grade Math » Unit: Fraction Operations
6th Grade Math » Unit: Fraction Operations
Andrea Palmer
Somerville, MA
Environment: Urban
 
Big Idea:

How would you solve 3 ¼ - 1 5/6? What do students understand? What gaps do they have in their understanding? Students continue looking for patterns when they are adding and subtracting fractions and then they take a quiz.

 
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unit 4 6 image
   

Unit Test

6th Grade Math » Unit: Fraction Operations
6th Grade Math » Unit: Fraction Operations
Andrea Palmer
Somerville, MA
Environment: Urban
 
Big Idea:

What have students learned during this unit? What gaps do students have in their understanding? Students take the Unit 4 test.

 
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Resources (7)
unit 4 18 image
   

Unit Review

6th Grade Math » Unit: Fraction Operations
6th Grade Math » Unit: Fraction Operations
Andrea Palmer
Somerville, MA
Environment: Urban
 
Big Idea:

What number sentence represents what is going on in this problem? Why? What kind of model could you create for this problem? Students review the skills they have learned throughout Unit 4.

 
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Resources (21)
unit 4 16 image
   

Using Number Lines to Discover Benchmark Fractions

5th Grade Math » Unit: Adding and Subtracting Fractions
5th Grade Math » Unit: Adding and Subtracting Fractions
Julie Kelley
Tyngsborough, MA
Environment: Suburban
 
Big Idea:

Benchmark Fractions help establish quantities, developing fraction number sense and judgment of the reasonableness of estimates.

 
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Resources (22)
 
Reflections (1)
lesson
   

Adding & Subtracting Fractions with Unlike Denominators (Centers)

5th Grade Math » Unit: Adding and Subtracting Fractions
5th Grade Math » Unit: Adding and Subtracting Fractions
Julie Kelley
Tyngsborough, MA
Environment: Suburban
 
Big Idea:

During choice time, students have an opportunity to select the activities that will help to develop their mathematical fluency.

 
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Resources (16)
 
Reflections (1)
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Why Fractions

5th Grade Math » Unit: Adding and Subtracting Fractions
5th Grade Math » Unit: Adding and Subtracting Fractions
Erin Doughty
Grand Rapids, MI
Environment: Urban
 
Big Idea:

I guess she’s not crazy after all!

 
Favorites (9)
 
Resources (8)
 
Reflections (1)
thinking
   

Fraction Cover Up

5th Grade Math » Unit: Fractions
5th Grade Math » Unit: Fractions
Cathy Skinner
Scottsdale, AZ
Environment: Urban
 
Big Idea:

Students need to concrete models be able to see the exchange of fractions with unlike denominators.

 
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Resources (14)
 
Reflections (1)
sandwich fraction
   

Adding/Subtracting Fractions Game

5th Grade Math » Unit: Adding and Subtracting Fractions
5th Grade Math » Unit: Adding and Subtracting Fractions
Erin Doughty
Grand Rapids, MI
Environment: Urban
 
Big Idea:

No fair, he has more than me!

 
Favorites (8)
 
Resources (10)
 
Reflections (1)
gold bars
   

Adding & Subtracting Mixed Numbers (Practice - Problem Solving)

5th Grade Math » Unit: Adding and Subtracting Mixed Numbers
5th Grade Math » Unit: Adding and Subtracting Mixed Numbers
Julie Kelley
Tyngsborough, MA
Environment: Suburban
 
Big Idea:

Students put their knowledge of adding and subtracting to use to solve problems.

 
Favorites (1)
 
Resources (19)
 
Reflections (1)
popcorn
   

Pattern Block Fractions

5th Grade Math » Unit: Adding and Subtracting Fractions
5th Grade Math » Unit: Adding and Subtracting Fractions
Erin Doughty
Grand Rapids, MI
Environment: Urban
 
Big Idea:

I’ll show you a whole!

 
Favorites (4)
 
Resources (8)
 
Reflections (1)
pattern blocks
Common Core Math
 
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