Curated OER
Common Denominator Practice #2
In this common denominator worksheet, students complete a total of 120 problems finding common denominators for pairs of fractions. Problems are set up 12 per page with 10 pages total.
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.
Math Drills
Adding and Subtracting Mixed Fractions (B)
Grab your stopwatch...ready, set, go! Time youngsters as they solve the addition and subtraction of mixed fractions. There are 12 problems provided, all of which have common denominators. An excellent practice!
Curated OER
Adding Fractions
Each of these 20 fraction pairs needs to be totaled, but that's not all there is to do! Scholars find the least common denominator first, then reduce the answer to simplest form if needed. These practice problems are excellent in the...
Curated OER
Adding Fractions
The steps are laid out in these fraction addition practice problems. Scholars add fractions with common denominators, making sure to reduce to the simplest form. For all of these, that means turning a simplified improper fraction into a...
Curated OER
Fraction - Subtracting Unlike Denominators
These presentations by Monica Yuskaitis are particularly good. In this one, she shows viewers how to deal with subtracting fractions that have unlike denominator, no small task! This is a tricky process, and this PowerPoint takes young...
West Contra Costa Unified School District
Lowest Common Multiple through the Grades
The LCM will be your new BFF. Learners review least common multiple and least common denominator applications, mostly on fractions, from middle school. Scholars then see how the LCM can be applied to various types of problems from...
Math Mammoth
Three Denominators
For this common denominator activity, students learn to add three fractions using common denominators. Students then practice by adding and subtracting fractions using common denominators.
Curated OER
Add Mixed Numbers With Like Denominators (G)
In this adding mixed numbers instructional activity, students find the sums of whole numbers and fractions with common denominators and reduce and rename the answers. Students solve 7 problems.
Curated OER
Add Fractions With Like Denominators (B)
In this adding fractions worksheet, students review adding the numerators and find the sums of fractions with common denominators. Students solve 24 problems.
Curated OER
Add Fractions With Like Denominators ©
In this adding fractions activity, students find the sums of fractions with common denominators and rename and reduce the answers. Students solve 14 problems.
Curated OER
Fraction X - Adding Unlike Denominators
Adding fractions with unlike denominators is a difficult process to master. This fine presentation does a terrific job of leading young math whizzes through the steps necessary to perform this calculation. The slides have clear graphics,...
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.
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...
Curated OER
Adding and Subtracting Fractions
In this math worksheet, students add or subtract fractions. Students find common denominators where needed and simplify their answers. Hints are available.
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
The 3 R's of Common Denominators
Third graders are shown an alternative method of determining the lowest common denominator of two or more unequal denominators. They complete a worksheet.
Curated OER
Lowest Common Denominator Worksheet
In this fractions instructional activity, students follow the steps to finding the lowest common denominator, filling in the answers to the prompts for each step.
CK-12 Foundation
Greatest Common Factor Using Factor Trees
Beginning with a description that sets the stage, learners are asked to break down the numbers 42 and 63 to find the greatest common denominator using factor trees. As they work through the factoring process, young mathematicians are...
Curated OER
Subtracting Mixed Numbers
In this math worksheet, students subtract mixed numbers. Students find common denominators. They subtract the fractions and whole numbers.
Curated OER
Reduction to Common Denominator
Young scholars compare two fractions with different denominators. In this fractions lesson, students find the least common multiple in order to find a common denominator with two fractions. Once they have a common denominator, they...
Scholastic
Study Jams! Compare Fractions & Mixed Numbers
Follow along with RJ from the Study Jams! crew as he walks step-by-step through the process for comparing fractions with unlike denominators. Starting with finding the least common denominator, the presentation goes on to demonstrate how...
Curated OER
Common Denominator Worksheet 1, Level 2
In this finding the equivalent denominators worksheet, students read pairs of fractions with uncommon denominators and convert them to fractions with like denominators. Students solve 120 problems.
Curated OER
Adding Fractions
It's all here: uncommon denominators, reducing, improper fractions...mathematicians have their hands full as they complete 16 fraction addition problems. There are two examples showing them the steps required, and each problem guides...