This original 6-problem assessment can be used as a quiz to cover 6th grade Common Core standard: CCSS.Math.Content.6.NS.B.4 which covers GCF, LCM, and the distributive property. There are two problems in each category. For LCM there is one problem to find the LCM of two numbers and one word problem in which you need to determine that finding the LCM will solve the problem. For GCF there is one problem to find the GCF of two numbers and one word problem in which you need to determine that finding the GCF will solve the problem. For the distributive property there is one problem to express a sum as a multiple of a sum of whole numbers with no common factor and one problem to do the same through use of a model as assistance. I didn't supply a rubric so you can grade according to your needs. Feel free to edit this assessment to better suit your student's levels.