Curated OER
Multiples Worksheet (1 of 2)
This is a progressive introductory assignment on determining the least common multiple of pairs of numbers. First, eight numbers are listed for learners to simply practice writing multiples for. They write down the first six multiples...
Curated OER
Multiples Worksheet (2 of 2)
In this multiples practice worksheet, students examine eight 1 and 2-digit numbers. Students record the first 8 multiples for each of the numbers. An example is provided.
McGraw Hill
Glencoe: Self Check Quizzes 2 Greatest Common Factor
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of greatest common factors. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click the...
McGraw Hill
Glencoe: Self Check Quizzes 2 Least Common Multiple
Use Glencoe's Math Course 2 randomly generated self-checking quiz to test your knowledge of finding the least common multiple. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page...
McGraw Hill
Glencoe: Self Check Quizzes 1 Greatest Common Factor
Use Glencoe's randomly generated self-checking quiz to test your knowledge of how to find the greatest common factor. Each question has a "Hint" link to help. Choose the correct answer for each problem. At the bottom of the page click...
Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Greatest Common Factor 2
Twenty-four problems present a variety of problems working with finding the greatest common factor and finding prime factorizations. They are given with each step to the solution cleverly revealed one at a time. You can work each step of...
PBS
Pbs Learning Media: Pizza Toppings
This Cyberchase video features Bianca who uses Venn Diagrams to make a pizza that satisfies the topping preferences of her friends.
University of Nottingham
Mars: Finding Factors and Multiples
This lesson is intended to help you to assess how well students are able to understand the meanings of the terms 'Greatest Common Factor' (GCF) and 'Least Common Multiple' (LCM). PowerPoint slides are provided for this lesson.
AAA Math
Aaa Math: Least Common Multiple
This tutorial offers an explanation of least common multiples, practice finding them and a game to play. There is a lot of information available at this location.
Amby Duncan-Carr
Amby Duncan Carr: Amby's Math Resources
Amby's Math Resources site is a tutorial that explains finding the greatest common factor. It also has examples that are done for you step by step, as well as examples for you to try (and check) on your own.
George Mason University
Margo Mankus: Investigating Lcm and Gcf Using Rods
This lesson plan is for an activity using rods (Cuisenaire Bars) to help students understand the concept of factors, in particular the LCM and GCF of two numbers.
Texas Instruments
Texas Instruments: Finding the Gcf
Students simplify fractions by dividing the numerator and denominator by the GCF (the greatest common factor). They check their work by using a calculator.
Texas Instruments
Texas Instruments: Greatest Common Factor
Students use a graphing calculator to find the Greatest Common Factor of two or more numbers.
Texas Instruments
Texas Instruments: Oliver's Method
Students discover a relationship between the Greatest Common Factor (GCF) and the Least Common Multiple (LCM) of two numbers. Students will find and justify the relationship that the product of two numbers is equal to the product of the...
Elias Saab
Math Drills: Lcm and Gcd Quiz
An interactive quiz which provides students with two numbers and asks them to find either the Least Common Multiple or the Greatest Common Divisor between them. Students input their solution and have the program evaluate it. Hints are...
Other
Gcd Training
Use this interactive table to practice finding the greatest common factor of two given numbers. The table can be reset with a new set of numbers for extra practice.
Scholastic
Scholastic: Study Jams! Math: Fractions: Greatest Common Factor
Complete a step by step process to determine the greatest common factor.
Math Planet
Math Planet: Pre Algebra: Finding the Greatest Common Factor
Gain an understanding of how to find the greatest common factor by viewing examples and a video lesson. [1:47]
Mangahigh
Mangahigh: Number: Least Common Multiple and Greatest Common Factor
This site provides students practice with the concept of least common multiples and greatest common factors. Students can learn about the topic by completing an interactive tutorial. Students can then take a ten question timed test to...
Khan Academy
Khan Academy: Distributive Property With Variables
Practice applying the distributive property to algebraic expressions. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Gcf & Lcm Word Problems
Solve word problems where you either need to find the GCF or LCM. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Khan Academy
Khan Academy: Greatest Common Factor
Find the greatest common factor of 2 or 3 integers. Students receive immediate feedback and have the opportunity to try questions repeatedly, watch a video or receive hints.
Soft Schools
Soft Schools: Greatest Common Factor Worksheet
Find the greatest common factor between two numbers. You may set the total number of problems per page, the minimum and maximum numbers, and an answer key is optional.
Math Is Fun
Math Is Fun: Least Common Multiple Tool
A simple tool that you can use to find the least common multiple (LCM) of two or three numbers.