What's on a Grade 7 gcf & lcm worksheet?

Each pack has up to 12 questions per page with a matching answer key, tuned to Grade 7, with beginner, intermediate, and advanced options so a teacher, tutor, or parent can match the learner's level.

What is the difference between GCF and LCM?

The GCF is the largest number that divides both (a common factor); the LCM is the smallest number both divide into (a common multiple).

How do you find the GCF with prime factorization?

Factor each number into primes, then multiply the primes they share, using the lowest power of each shared prime.

How do you know whether a word problem needs the GCF or the LCM?

If you are splitting things into the greatest number of equal groups with none left over, use the GCF. If you are waiting for two repeating events to happen together again, or matching packs of different sizes, use the LCM.

Do these GCF and LCM worksheets come with answers?

Yes. The free Grade 7 sheets include their answer key, and every pack you make includes one too.

Grade 7 · GCF & LCM

Grade 7 GCF & LCM Worksheets

Printable Grade 7 gcf & lcm worksheets, sized to fit one page. Download a free sample below, or pick beginner, intermediate, or advanced and generate a fresh pack with answer keys in seconds. No AI, no wrong answers.

Create free worksheets →

Free to start · answer keys included · free accounts get 5 Standard packs to use within 14 days · no card required.

Grade 7 examples by level

BeginnerPrime factorization of 135 =Answer3³ × 5
IntermediateLCM of 4, 6 and 9 =Answer36
IntermediateOne light flashes every 16 seconds and another every 20 seconds. They just flashed together. In how many seconds will they next flash together? Do you need the GCF or the LCM?AnswerLCM: 80 seconds
AdvancedAva plants 22 tomato and 33 pepper plants in rows. Every row has the same number of plants and only one kind. What is the most plants a row can have? How many rows is that?Answer11 plants; 5 rows

Real problems from the generator: always mathematically correct, and every pack is different.

Download a free Grade 7 gcf & lcm worksheet

One page, ready to print, no account needed. Pick a level:

These three sheets are fixed, so you can bookmark or share them and get the same page back. Each one includes its answer key. Fresh numbers come with a free account.

Why Grade 7 gcf & lcm practice matters

GCF and LCM ask opposite questions — largest shared factor versus smallest shared multiple — and mixing up which one you need is what turns simplifying fractions and adding unlike fractions into guesswork.

Grade 7 is the only grade Mathter offers gcf & lcm worksheets for.

Want the full method, tips, and common mistakes? Read the GCF and LCM Worksheets guide.

Frequently asked questions

What's on a Grade 7 gcf & lcm worksheet?: Each pack has up to 12 questions per page with a matching answer key, tuned to Grade 7, with beginner, intermediate, and advanced options so a teacher, tutor, or parent can match the learner's level.
What is the difference between GCF and LCM?: The GCF is the largest number that divides both (a common factor); the LCM is the smallest number both divide into (a common multiple).
How do you find the GCF with prime factorization?: Factor each number into primes, then multiply the primes they share, using the lowest power of each shared prime.
How do you know whether a word problem needs the GCF or the LCM?: If you are splitting things into the greatest number of equal groups with none left over, use the GCF. If you are waiting for two repeating events to happen together again, or matching packs of different sizes, use the LCM.
Do these GCF and LCM worksheets come with answers?: Yes. The free Grade 7 sheets include their answer key, and every pack you make includes one too.

Make a Grade 7 gcf & lcm pack

Pick your options and print in seconds, with answer keys included.

Create free worksheets

Free to start · answer keys included · free accounts get 5 Standard packs to use within 14 days · no card required.