Common Denominators Teacher Resources

Find Common Denominators educational ideas and activities

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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 glance. Fraction games and printable game pieces available.
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 and learn just how it's done.
In common denominator worksheet, students solve four multi-step common denominator problems using their graphing calculators.  An example problem giving key strokes and steps is provided.
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 a definition meant for algebra rather than pre-algebra.
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 problems on the board for assessment.
For this mixed numbers worksheet, students add mixed numbers with like denominators. Students complete 7 problems on 10 pages total.
Students solve various word problems that deal with common denominators, and write the mathematical explanations they used to obtain the solutions.
For this division worksheet, students divide fractions with one-digit numerators and common denominators. Students divide ten online interactive fractions.
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 excellent way to review your fractions lesson. Be aware, the learning exercise contains poor wording, the instructions state "write the sum" when it should ask for the difference. Use this as a learning moment and ask you class to find the mistake! 
In this online interactive math activity, learners complete the equations by dividing the fractions that share a common denominator. Students may access the correct answers and their scores by clicking submit.
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 definition meant for algebra rather than pre-algebra.
In this online interactive math worksheet, students complete the equations by dividing the fractions that share a common denominator. Students may access the correct answers and their scores by clicking submit.
In this online interactive math worksheet, students complete the equations by dividing the fractions that share a common denominator. Students may access the correct answers and their scores by clicking submit.
In this online interactive math worksheet, students complete the equations by dividing the fractions that share a common denominator. Students may access the correct answers and their scores by clicking submit.
In this online interactive math worksheet, students divide fractions with a common denominator. Students may access the correct answers and their score by clicking submit.
In this interactive online math worksheet, 5th graders subtract fractions that share common denominators. Students may access the correct answers and their scores by clicking submit.
For this interactive online math worksheet, students subtract fraction that share common denominators. Students may access the correct answers and their scores by clicking submit.
In this interactive online math worksheet, 5th graders subtract fractions that share common denominators. Students may access the correct answers and their scores by clicking submit.
In this interactive online math worksheet, 5th graders subtract fractions that share common denominators. Students may access the correct answers and their scores by clicking submit.
In this interactive online math learning exercise, 5th graders subtract fractions that share common denominators. Students may access the correct answers and their scores by clicking submit.

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Common Denominators