K-5 Math Teaching Resources
Subtracting Mixed Numbers (Unlike Denominators)
Young mathematicians demonstrate their ability to subtract mixed numbers by completing this collection of fraction word problems. From figuring out the weight of objects in a package, to finding the difference in height between two...
Curated OER
Finding the Least Common Multiple
In this math worksheet, students learn to find the least common multiple and rewrite fractions with common denominators. There are step by step directions and 10 problems.
Silver Burdett Ginn
Study Buddies: Adding And Subtracting Fractions With Unlike Denominators
Pair up your math pals to teach each other about adding and subtracting uncommon denominator fractions! Step-by-step instructions are provided as well as five practice problems.
Curated OER
Adding Fractions with Unlike Denominators
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...
Curated OER
Mighty Multiples
Students study about multiples, common multiples, least common multiples, and lowest common denominators. They recognize that a multiple is the product resulting when two or more factors are multiplied by each other and that common...
Curated OER
Least Common Multiple
In this least common multiples worksheet, 8th graders solve 20 different problems that include determining the least common multiple for each set of numbers. They first list the prime factors of each number given in the statement. Then,...
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.
Curated OER
Adding Fractions: Unlike Denominators
In this adding fractions worksheet, learners solve 9 problems in which simple fractions with unlike denominators are added. Students write the equivalent fractions using the LCD before solving.
Curated OER
Finding the LCM
Students explore the concept of finding the least common multiple of two numbers. In this least common multiple lesson, students find the least common multiple of two numbers.
Curated OER
Finding the Least Common Multiple
In this finding the least common multiple activity, 6th graders use two methods, a list of multiples or prime factorization, to find least common multiples.
Curated OER
Least Common Multiple
For this least common multiple worksheet, students write numbers as a product of primes to determine the least common multiple. Explanations and examples are provided. This two-page worksheet contains ten problems.
Curated OER
Relating GCF and LCM for Grade Six
In this relating GCF and LCM for Grade Six worksheet, 6th graders answer ten multiple choice questions about factors and multiples, with answers available onscreen.
Curated OER
Math Quiz: Least Common Multiple
In this math quiz: least common multiple worksheet, 6th graders find the LCM for 8 pairs of numbers, then answer 3 multiple choice word problems.
Curated OER
Word Problems Using the Lowest Common Multiple
In this word problems using the lowest common multiple instructional activity, 6th graders answer 10 multiple choice problems, with answers at the bottom on the screen.
Curated OER
Playing the LCM Game
Students practice finding the least common multiple of two numbers. In this practice finding the least common multiple of two numbers lesson, students play head-to-head against their classmates. Students play a version of 'slap jack'...
Math Ocean
Fraction Word Problem Worksheets
There are actually several math topics covered by this set of problems. First is the addition of fractions and mixed numbers with both like and unlike denominators. Nine word problems are provided after some whole class practice.There...
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...
Illustrative Mathematics
Plastic Building Blocks
Let's build a castle! Dennis and Cody have big plans, but do they have enough blocks between the two of them to accomplish their goal? A great context that requires students to add and compare mixed numbers. Encourage the use of pictures...
Curated OER
Mighty Multiples
In this math instructional activity, students list the first 8 multiples of 8 numbers and identify the least common multiple for 5 pairs of factors. Students also find the lowest common denominator for 15 sets of fractions.
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...
Curated OER
Finding The LCM
Students find the least common multiple. In this LCM lesson, students find the multiples of two numbers. They view which multiples are common between the two numbers and then find the smallest.
Curated OER
Adding and Subtracting Fractions 3
In this beginning fractions worksheet, students complete a set of 10 problems, adding or subtracting fraction pairs. Page has links to multiple resources.
Curated OER
Adding and Subtracting Fractions 1
For this fractions worksheet, students solve 10 problems, adding or subtracting simple fraction pairs. Page has links to multiple resources.
Illustrative Mathematics
Dimes and Pennies
Help your fourth graders make cents out of fractions and decimals with this short word problem. After learning that dimes are one-tenth and pennies one-hundredth of a dollar, students write a fraction and decimal for a given number of...