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Worksheet
Curated OER

Lowest Common Multiple

For Students 4th - 8th
In this lowest common multiple instructional activity, students find the LCM of 2 digit numbers that don't exceed the number 20. Students complete 10 problems.
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Lesson Plan
Curated OER

Fractions Forever!

For Teachers 5th - 8th
Middle schoolers identify proper, improper fractions, and mixed numbers.  They reduce fractions to their lowest terms. They add and subtract fractions with different denominators, and multiply and divide fractions, as well as decimal...
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Worksheet
Curated OER

Practice Adding Fractions

For Students 6th - 8th
In this math worksheet, learners practice combining the fractions with unlike denominators. They find the common denominators before writing equivalent fractions to solve.
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Lesson Plan
Silver Burdett Ginn

Study Buddies: Adding And Subtracting Fractions With Unlike Denominators

For Teachers Pre-K - 6th Standards
Pair up your math pals to teach each other about adding and subtracting uncommon denominator fractions! Step-by-step instructions are provided as well as five practice problems. 
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Worksheet
Curated OER

Add Fractions (D)

For Students 4th - 5th
In this fraction worksheet, students review the steps for adding fractions with unlike denominators. They find equivalent fractions using the least common denominator, add, and reduce as needed. They find the sums to 9 problems.
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Worksheet
Curated OER

Add and Subtract with Unlike Denominators

For Students 5th - 8th
In this adding and subtracting with unlike denominators activity, learners add and subtract fractions with unlike denominators. They complete six problems.
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Lesson Plan
Curated OER

Reduction to Common Denominator

For Teachers 4th - 5th
Students compare two fractions with different denominators. In this fractions lesson plan, students find the least common multiple in order to find a common denominator with two fractions. Once they have a common denominator, they...
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Lesson Plan
Curated OER

Accelerated Arithmetic-- Find the Lowest Common Denominator

For Teachers 4th - 5th
In this math worksheet, students solve 12 problems in which simple fractions with unlike denominators are added. Examples are in a horizontal format with ample room to rewrite with common denominators.
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Lesson Plan
Curated OER

Adding and Subtracting Fractions and Mixed Numbers

For Teachers 4th - 6th
Students add and subtract fractions and mixed numbers. For this fractions worksheet, students learn how to add and subtract mixed numbers based on their knowledge of adding and subtracting fraction with a teacher led question and answer...
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Worksheet
K-5 Math Teaching Resources

Subtracting Mixed Numbers (Unlike Denominators)

For Students 3rd - 7th Standards
Young mathematicians demonstrate their ability to subtract mixed numbers by completing this collection of fraction word problems. From figuring out the weight of objects in a package, to finding the difference in height between two...
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Worksheet
Curated OER

Add Fractions (A) Unlike Denominators

For Students 5th - 6th
In this math worksheet, students solve 10 problems in which fractions with unlike denominators are added. Problems are in a horizontal format and there are instructions on the page. Most of the denominators are two digit numbers; the LCD...
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PPT
Curated OER

Fractions XI Adding Mixed Numbers with Unlike Denominators

For Teachers 4th - 6th
This PowerPoint demonstrates how to add mixed numbers with unlike denominators. The slides display examples of problems, along with steps that students can easily follow.
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eBook
CK-12 Foundation

CK-12 Middle School Math Concepts - Grade 6

For Students 6th Standards
Twelve chapters cover a multitude of math concepts found in the Common Core standards for sixth grade. Each title provides a brief explanation of what you will find inside the chapter—concepts from which you can click on and learn more...
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Unit Plan
National Security Agency

Fraction Fever

For Teachers 4th - 5th Standards
This unit on fractions allows for upper-aged elementary learners to explore ways to find the greatest common factor and least common multiple of two numbers. Ultimately, young mathematicians will be able to identify equivalent fractions,...
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Worksheet
Curated OER

Add Fractions (J)

For Students 5th
In this fraction addition worksheet, 5th graders find the equivalent fractions using the least common denominator by adding the 9 equations. Students reduce the fractions.
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Lesson Plan
Curated OER

Factor Fun for Fifth Graders

For Teachers 5th
Fifth graders explore common factors. In this factorization lesson plan, 5th graders discover the greatest common factor among two numbers in a game format. Students build on previous knowledge to determine the greatest common factor.
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Lesson Plan
PBS

Add, Subtract and Multiply Fractions

For Teachers 4th - 6th Standards
Your future chefs will appreciate this comprehensive lesson where learners practice operations on fractions using pizza and soup analogies. Learners begin with a pizza analogy that requires the learners to multiply a whole number by a...
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Activity
Illustrative Mathematics

Jog-A-Thon

For Teachers 5th Standards
Adding fractions with unlike denominators can be cloudy, but attaching the fractions to real-life math can add to fraction number sense. Alex needed to run only a mile, will completing the training in two segments satisfy this...
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Lesson Plan
Illustrative Mathematics

Plastic Building Blocks

For Teachers 3rd - 5th Standards
Let's build a castle! Dennis and Cody have big plans, but do they have enough blocks between the two of them to accomplish their goal? A great context that requires students to add and compare mixed numbers. Encourage the use of pictures...
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Worksheet
McGraw Hill

Adding and Subtracting Mixed Numbers

For Students 4th - 8th
Adding and subtracting mixed numbers will be a breeze with this guided worksheet packet. Learners work through examples outlining each step including rewriting mixed numbers as improper fractions, adding numerators, and rewriting the sum...
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Lesson Plan
Curated OER

Mathematics: Domino Theory

For Teachers 6th
Sixth graders use dominos and plastic chips to study common denominators and fractions. They describe how these operations are related to each other.
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Assessment
Los Angeles County Office of Education

Assessment For The California Mathematics Standards Grade 6

For Students 6th Standards
Test your scholars' knowledge of a multitude of concepts with an assessment aligned to the California math standards. Using the exam, class members show what they know about the four operations, positive and negative numbers, statistics...
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Lesson Plan
Curated OER

Subtracting Fractions

For Teachers 6th - 8th
Middle schoolers investigate the concept of subtracting fractions. They use a variety of problems in order to practice new skills. The independent practice is used to obtain an informal measurement of mastery with the use of a formal...
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Handout
Curated OER

Fraction Addition and Subtraction

For Students 5th - 6th
Students learn skills necessary for adding or subtracting fractions.