Students simplify radicals with variables and provide explanations as to what they are doing. 10 problems total. 4 pages. You can have students work out exact results (which are provided on the answer key) or approximate the number values while using variables as well. It's up to you! This is a building block for Common Core Standard CCSS.MATH.CONTENT.HSA.REI.A.2. Did I mention it is free?