Free Year 7 GCF & LCM worksheets (printable PDF)
Free printable Year 7 gcf & lcm worksheets, organised using England's year-group terminology and an age-equivalent library level (Key Stage 3), covering greatest common factor and lowest common multiple. Pick a set below to print or save as a PDF, or generate a fresh one. Answers are computed in code from the exact questions on the page; Pro unlocks the printable answer key and removes the watermark. No login is needed to use the worksheet.
What is gcf & lcm?
The greatest common factor is the largest factor two numbers share; the lowest common multiple is the smallest multiple they share.
How to teach it
List factors (for the highest common factor) or multiples (for the lowest common multiple) of each number and find the shared one. Later use prime factors.
Worked example
Common mistake
Mixing up which to list (factors vs multiples), and stopping before finding the common value.
What's inside
- Find the LCM of 9 and 6:
- Find the GCF of 2 and 7:
- Find the GCF of 10 and 6:
- Find the LCM of 8 and 9:
- Find the GCF of 3 and 8:
- Find the LCM of 12 and 10:
Sample questions. Each printable set below has fresh numbers; its printable answer key is available with Pro.
Year 7 GCF & LCM worksheet sets
All gcf & lcm worksheets →Sets A-F are the same worksheet with different questions - print any (or all) for fresh practice.
Frequently asked questions
Are these Year 7 gcf & lcm worksheets free?
Yes. Every worksheet on ChalkBee is free to view and print or save as a PDF, with no login required. Pro unlocks the printable answer key and removes the watermark.
Do the worksheets have answer keys?
The answers are computed in code from the exact questions on each sheet. The printable answer key is available with Pro.
How was the Year 7 level chosen?
The collection uses Year 7 terminology and an age-equivalent worksheet-library level. Key Stage 3 is shown as year-group context, not as a claim that every sheet maps to a specific statutory curriculum objective. There are 6 printable sets on this page.
How do I print or download them?
Open any set, then use your browser's print option to print it or to save it as a PDF. The pages are laid out to print cleanly on standard letter or A4 paper.