Curated OER
Fractions: Subtracting Like Denominators
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...
Curated OER
Least Common Multiple or Least Common Denominator
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.
Curated OER
Add Mixed Numbers With Like Denominators (B)
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.
Math Salamanders Ltd.
Adding Subtracting Fractions With Like Denominators Sheet 1
In this finding the sums and differences of fractions learning exercise, learners add and subtract fractions with the same denominators. Students solve 16 problems.
Curated OER
Subtraction Fractions, Common Denominators
How many steps do you need to subtract fractions with common denominators? Thirty problems await your kids, all with outlined steps for easy solving. Some fractions need to be reduced, while others will be solved after one step. An...
Curated OER
Common Denominator Worksheet
In this fractions instructional activity, students find the common denominators of the twelve given fractions on each of the ten pages.
Curated OER
Fraction X--Adding Unlike Denominators
In this math PowerPoint, the process of adding fractions with unlike denominators is broken down into a logical, easy-to-follow sequence of steps. Definitions and examples of multiples, least common multiple, and least common denominator...
Curated OER
Fraction XII: Subtracting Unlike Denominators
This fractions PowerPoint defines and gives examples of multiples and least common multiple, then models how to list multiples and circle the least common multiple. Each step to use in subtracting fractions with unlike denominators is...
Curated OER
Discovering New Units
Students use Cuisenaire rods to explore common denominators. In this fractions instructional activity, students build Cuisenaire representations of fractions, then find their equivalent counterparts to find the common denominator.
PBS
Working with Common Denominators: Assessments
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.
Illustrative Mathematics
Listing Fractions in Increasing Size
Increase the depth of your class's fractional number sense with this number-ordering activity. Given four fractions, each with different numerators and denominators, young learners are asked to place them in order from smallest to...
Curated OER
Finding Common Denominators to Subtract
Subtracting fractions with unlike denominators can be overwhelming, but in this task, 5th graders work systematically to break down the procedure through three questions. The first two questions ask for pictures to be drawn along with...
Online Math Learning
Word Problems That Use GFC or LCM
This is a webpage that contains five word problems requiring learners to find the least common multiple or least common denominator.
Curated OER
The 3 R's of Common Denominators (Language)
Students solve various word problems that deal with common denominators, and write the mathematical explanations they used to obtain the solutions.
Ohio Department of Education
Actions with Fractions: Adding and Subtracting Fractions with Common Denominators
Fourth graders develop a conceptual understanding of fractions and begin to add and subtract fractions with like denominators. Included is a worksheet to assess readiness and a teacher's checklist showing class understanding at a...
Curated OER
Subtract Fractions With Like Denominators (I)
In this finding the differences of fractions with common denominators worksheet, students subtract the numerators, keep the same denominators, and reduce to lowest terms. Students solve 14 problems.
Curated OER
Least Common Multiple
Give students detailed instructions on how to find the Least Common Multiple as well as practice with this thorough introductory worksheet. Instructions for this worksheet include an explanation of both guess and check as well as prime...
Curated OER
Adding and Subtracting Fractions (With Unlike Denominators)
In this math worksheet, students subtract and add fractions with unlike denominators. Students solve the problem in steps. They are given examples of how to solve the problems.
K-5 Math Teaching Resources
Adding Mixed Numbers (Unlike Denominators)
Mix things things up in your elementary math class with a series of problem-solving exercises. Presented with a series of mixed number word problems, young mathematicians are asked to solve them by using either visual fraction models or...
EngageNY
Least Common Multiple and Greatest Common Factor
Find the common denominator between prime factors, factor trees, and the distributive property. Scholars learn to find the least common multiple and greatest common factor of pairs of numbers. They rotate through stations to connect...
PBS
Working with Common Denominators: Activities and Supplemental Materials
Enjoy these straightforward and simple learning exercise pages that practice with different denominators. The practice starts simple with adding fractions together and then works on a recipe that needs to be tripled.
Education Development Center
Adding Fractions with Unlike Denominators
If the fractions don't have a common denominator, make them have one. Learners first read and analyze a conversation of pupils trying to add 2/5 and 1/2. They compare the process of adding fractions to the process of adding quantities...
Curated OER
Adding and Subtracting Fractions with Like and Unlike Denominators
In this math worksheet, students compute with fractions. Five of the problems involve common denominators. Four of the problems require students to first find the common denominator. Six problems are multiple choice. One problem involves...
Curated OER
Common Denominator Practice
In this common denominator worksheet, students find the common denominators of pairs of fractions. Problems are set up 12 per page with 10 pages total.