Common Denominators Teacher Resources

Find Common Denominators lesson plans and worksheets
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8 Items in Assessment Set
Lesson Planet Curated

CORE Math Performance Assessment Modules: Grade 5

For Teachers 5th Standards
A set of CORE math assessments for fifth graders begins with a three-part task that checks pupils' ability to find the product of fractions and whole numbers, mixed numbers, or fractions. For other assessments, learners show their...
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Instructional Video3:18
Curated OER

Adding Fractions with Like Denominators

For Students 5th - 7th
Assist your students in understanding how to add fractions with like denominators by showing them this presentation. Sal adds 3/15 to 7/15 and then simplifies his answer. He uses drawings and multiple colors to show the actual process.
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PPT
Curated OER

Fractions: Subtracting Like Denominators

For Teachers 3rd - 5th Standards
These presentations, designed by Monica Yuskatis, are among the best math PowerPoints you can find. Use this one to lead your pupils through the steps needed to subtract fractions with like denominators, then simplify the answers into...
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Instructional Video2:06
Curated OER

How Do You Find the Least Common Denominator of Two Rational Expressions?

For Teachers 8th - 11th
Adding fractions that are in rational expression form? Do they have a common denominator? No? Well, then the least common denominator needs to be found. How is the least common denominator of rational expression found? Watch this video...
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Instructional Video8:52
Curated OER

How Do You Put Fractions in Order Using an LCD?

For Teachers 4th - 8th
Put fractions with different original denominators in order using the least common denominator. Once she has shown how to find the least common denominator, an instructor constructs equivalent fractions that are more easily compared to...
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PPT
Curated OER

Fractions VII - Adding Like Denominators

For Teachers 3rd - 4th
This series of presentations on fractions by Monica Yuskaitis is quite good. In this one, she has learners practice the skill of adding fractions with like denominators, then simplifying their answers. Feedback is given for each answer...
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Instructional Video9:28
Curated OER

How Do You Put Fractions in Order Using an LCD?

For Teachers 6th - 12th
Put fractions with different original denominators in order using the least common denominator. Once she has shown how to find the least common denominator, an instructor constructs equivalent fractions that are more easily compared to...
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Interactive
Curated OER

Least Common Multiple or Least Common Denominator

For Students 5th - 6th
Fifth and sixth graders solve 12 math problems by finding the least common multiple or least common denominator. They type the answer into the text box.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators (B)

For Students 5th - 6th
In this adding mixed numbers worksheet, students find the sums by adding mixed numbers with common denominators and reducing the answer to lowest terms. Students solve 7 problems.
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Worksheet
Curated OER

Subtract Mixed Numbers With Like Denominators (G)

For Students 4th - 5th
Young scholars solve 14 problems in which mixed numbers with like denominators are subtracted. An example is provided on this page.
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Instructional Video2:26
Khan Academy

Subtracting Fractions with Like Denominators

For Students 3rd - 5th Standards
Elementary school students can observe Sal as he subtracts fractions that have a common denominator. Because this concept is fairly straight forward, he focuses on simplifying his answer. A great video for those needing extra support in...
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Worksheet
Curated OER

Add and Subtract Fractions with Like Denominators: 2 (Word Problems)

For Students 4th - 5th Standards
For this fraction worksheet, fourth and fifth graders solve six word problems, all having to do with adding or subtracting fractions with like denominators. This worksheet can be adapted to the Common Core standards in math.
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Lesson Plan
Curated OER

Adding Fractions With Like Denominators

For Teachers 4th - 5th
Students investigate the concept of adding fractions with like denominators. They review how to combine the numerators. Students use cutouts to handle fractions that are hands on while comparing them to slices of pizza. They work...
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Instructional Video5:07
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Math Antics

Common Denominator ECD

For Students 3rd - 6th Standards
Find the easiest common denominator. A video demonstrates finding a common denominator to add fractions. Pupils learn how to find a common denominator by using the product of the two denominators. After finding the common denominator,...
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Instructional Video1:46
Curated OER

What's the Least Common Denominator?

For Teachers 6th - 12th
Help your class take on the least common denominator by providing them with this informational video. The video gives a definition of the least common denominator and includes an example using 2 algebraic fractions. This is definitely a...
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Instructional Video1:10
Curated OER

What's the Least Common Denominator?

For Teachers 4th - 8th
Help your class take on the least common denominator by providing them with this informational video. The video gives a definition of the least common denominator and includes an example using two algebraic fractions. This is definitely...
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Assessment
PBS

Working with Common Denominators: Assessments

For Students 4th - 6th Standards
Now that the practice is over, see if young mathematicians can utilize their new skills on finding common denominators and adding fractions. The assessment contains one map challenge and follows with skills practice. 
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Worksheet
Curated OER

Subtract Mixed Numbers With Like Denominators (J)

For Students 4th - 5th
Start by subtracting the whole numbers and then the fractions! Learners solve subtraction problems with like denominators (no regrouping required). Good, basic practice when it comes to fractions!
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Worksheet
Curated OER

Add Mixed Numbers with Like Denominators (F)

For Students 4th - 6th
In this adding mixed numbers practice worksheet, students solve 14 problems that require them to add mixed numbers that have like denominators.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators [C]

For Students 4th - 5th
In this mixed number addition worksheet, students solve a total of 7 problems, adding mixed numbers with like denominators. An example problem appear at the top of the worksheet.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators [J]

For Students 4th - 5th
In this mixed number addition activity, learners add a total of 14 problems, using mixed numbers with like denominators. An example problem appears at the top of the activity.
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Worksheet
Curated OER

Add and Subtract Fractions with Like Denominators - CA Standards Worksheet

For Students 4th - 5th
In this fraction learning exercise, students solve 6 word problems that have to do with adding or subtracting fractions with like denominators. All answers are to be reduced to simplest form.
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Instructional Video8:39
Krista King Math

Adding and Subtracting Fractions

For Students 3rd - 7th Standards
Develop a strategy for adding and subtracting fractions with your classes. The video shows a procedure for adding and subtracting fractions by finding common denominators. Each example increases in difficulty.
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Worksheet
Curated OER

Add Mixed Numbers With Like Denominators (B)

For Students 4th - 6th
Looking to drill your upper elementary schoolers on their ability to add mixed numbers with like denominators? A cartoon at the top reminds learners how to tackle each problem (starting with the whole numbers and moving to the...

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Common Denominators