Common Denominators Teacher Resources

Find Common Denominators educational ideas and activities

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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 evaluating the subtraction sentences to illustrate why finding a common denominator is important. The third and final question allows for subtraction of an improper fractions without pictures. The activity includes a commentary and a solution page that replaces a traditional lesson plan and provides valuable insight for teachers in order to smoothly implement the lesson in the classroom.  
Finding common denominators is an important strategy when adding fractions with unlike denominators. In the first two questions in this three-question task, fifth graders are asked to combine fractions and draw a picture to show their solution. The third question adds improper fractions, allowing for work with fractions greater than one. The commentary and possible solutions provide the teacher with the information needed to successfully implement the activity in the classroom.  
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.
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.
For this mixed numbers worksheet, students add mixed numbers with like denominators. Students complete 7 problems on 10 pages total.
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.
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 worksheet 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! 
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.
Young scholars solve various word problems that deal with common denominators, and write the mathematical explanations they used to obtain the solutions.
Fifth graders will be clamoring for s'more fractions after they finish this one! Motivated by a chocolate bar used for a yummy campfire treat, learners have to decide how to add fractions without like denominators by discovering the importance of a common factor. The answers and graphic images in the commentary section provide great information for teachers to be able to implement readily in the classroom. 
Fractions are a common fear in school, but visualizing them on a number line can help your learners understand their relationship to one another. The activity provides two solutions; use either a number line or a common denominator. Solutions are explained in detail, which can be beneficial as supplemental notes or extra practice. 
Young mathematicians compare two fractions with like denominators and then move to the next level to compare fractions with unlike denominators. They will first try to use mental math to make educated guesses. There are a few guidelines to use when comparing fractions that have like denominators, and also when comparing fractions with like numerators. The class may also use fraction cards, number lines, fraction circles, and rods to help visual learners.
For this division worksheet, students divide fractions with one-digit numerators and common denominators. Students divide ten online interactive fractions.
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.
For 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.
For 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.
In this interactive online math worksheet, students subtract fraction that share common denominators. Students may access the correct answers and their scores by clicking submit.

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Common Denominators