Introduce GCF and LCM, reinforce the concepts of Factors and Multiples, or learn a new skill with this complete set of task cards! They are scaffolded to where you can use the easier questions if it is a new skill, split the factor and multiple questions to focus on one or the other, leave out some easier steps for older students, or use the whole set for a complete study of the material. Later questions are framed to open discussion about patterns of factors and multiples, and to encourage the students to think abstractly about the material! Print out and laminate for sturdy keeping, or print out a few sets for pairs or group work! Answer key is included. Enjoy!