Greatest Common Factor & Lowest Common Multiple

This pack of resources covers the Math topics of the Greatest (or Highest) Common Factor (GCF) and the Lowest Common Multiple (LCM).

Whilst this may seem a small disconnected topic it is actually packed with a lot of Math that includes practice with multiplication and division, factors, factor pairs, prime numbers and prime factors, the distributive property of multiplication, entering numbers into simple numerical formulae & writing numbers with exponents, all of which are excellent preparation for the algebra work they will be facing later on.

As such this resource of 9 Sets of worksheets could be easily spread throughout the year to build up the various competences and complement other topics in your syllabus.

The core method used in both is listing and comparing so students get lots of great practice with their multiplication (and division). However additional methods have been included that combine with knowledge of other areas in Math and show the connection between the GCF & LCM.

• Set 1: Factor Pairs
• Set 2: Find the Greatest Common Factor of 2 Numbers
• Set 3: Find the Greatest Common Factor of 3 Numbers
• Set 4: Prime Factorization
• Set 5: Find the Greatest Common Factor (GCF) using Prime Factorization
• Set 6: Change an Addition to Multiplication with the GCF
• Set 7: Find the Lowest Common Multiple (LCM) of 2 Numbers
• Set 8 Find the Lowest Common Multiple (LCM) of 2 Numbers using Prime Factorization
• Set 9: Find the LCM of 2 Numbers using the HCF

The worksheets are, as always in Jeff’s Notebooks, (almost unlimited), and differentiated.

Why have multiple ranges of numbers for each Set ?
This offers the possibility for the student to initially focus on the process and aim of the specific method outlined rather than their skills with multiplication or division. However when ready they can move on to a more challenging set of questions that brings these skills into play.

So, how many worksheets are there exactly ?
Almost Unlimited. At the click of a button all numbers are randomized, so you can create as many different worksheets as you need for classwork, homework, revision, preparing for assessment, fillers etc and the numbers will change every time.

These are straightforward no-prep worksheets that require no extra work. Simply CLICK-PRINT AND GO. This makes them ideal to have printed and ready for a replacement teacher if needed.

Teachers Guide
This includes notes on the most popular methods used.

Answers are automatically generated every time.

Note
These resources work with the official Adobe Acrobat Reader on Windows or Mac computers.