Least Common Multiple Teacher Resources

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.

In this finding LCM activity, students read a substantial amount of information about finding LCM for numbers, then complete 20 problems using the information given.

Teacher's notes, a materials list, detailed procedure, tips, and extension ideas are all included to make teaching this lesson on photovoltaic cells a sunny spot in your day! After some brief background reading, physical science...

Students practice solving addition problems of fractions with unlike denominators and discover how to apply the lowest common multiple to solve problems. After completing practice problems, they review least common multiple and apply it...

A nine-row data table has novice number crunchers fill in columns for the greatest common factor, least common multiple, product of the two, and product of numbers. The pairs of numbers to work with are all single- and double-digit...

Sixth graders practice Least Common Multiple in fractions. In this fraction lesson, 6th graders look at two different fractions and find a common denominator. They sing a song to memorize mean, median, and mode. 

In this number theory worksheet, students complete a total of 13 problems, finding multiples, LCM and solving 1 word problem. 

How can you tell if 2 fractions are equal or different when they have different denominators? Watch this video to find out! A tutorial on common denominators, this video explains each step necessary to find common denominators, create...

How can you tell if two fractions are equal or different when they have different denominators? Watch this video to find out! A tutorial on common denominators, this video explains each step necessary to find common denominators, create...

In this subtracting fractions worksheet, students solve 18 different problems that include subtracting various types of fractions. First, they find the least common multiple of both numbers. Then, students rewrite the fractions as...

In this adding and subtracting fractions learning exercise, students are guided through the process of adding and subtracting fractions and finding the least common denominator for fractions with different denominators. They practice...

In this rational equation worksheet, students solve rational expressions by finding the LCM. There are 18 problems on this two-page worksheet.

In this set of factors worksheets, students explore factoring, prime numbers, highest common factor, least common multiple, and exponents and powers. There are seventeen total problems on four separate worksheets. There is an answer sheet.

In this common multiples worksheet, students list the first 3 common multiples of 2 numbers given up to the number 10. Students complete 4 problems.

In this common multiples instructional activity, students list the first 3 common multiples of two, 2 digit numbers in each problem. Students complete 4 problems.

Viewers of this short video examine abstract equations with fractional expressions and learn to find a least common multiple to eliminate denominators. They then see how to manipulate the equation to isolate the variable of interest.

For this multiple riddles worksheet, students problem solve five mathematical word problems associated with multiple riddles. Students share their answers with their classmates.

Fifth graders explore common factors. In this factorization lesson, 5th graders discover the greatest common factor among two numbers in a game format. Students build on previous knowledge to determine the greatest common factor.

In this LCD worksheet, students find the lowest common denominator in fraction problems that are also division problems. Students complete 3 problems.

In this math instructional activity, students subtract and add fractions with unlike denominators. Students solve the problem in steps. They are given examples of how to solve the problems.

Fractions and variables on both sides of the equation? Oh my! There are one hundred and one steps to solving this equation. Not really, but now that I have your attention, I recommend you watch this video closely and follow the...

A detailed video tutorial on how to solve an equation with fractions with different denominators, this resource could prove to be a valuable tool. This video covers how to deal with fractions as well as how to solve an algebraic equation...

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...

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.