Greatest common factor

Greatest common factor & least common multiple

Student name (optional)

Printed on the worksheet and the reward star. We never save it.

Choose a worksheet

Customize

Problems

Find

Numbers in each problem

Largest number

Sheet

Number of problems

Up to 22 fit on one page with these choices.

Worked example

Pictures

Game

Include answer key

Reward star

Paper:

Every click makes a new set of problems.