CCSS 6.EE.3 (Common Core, 6th Grade): "Apply the properties of operations to generate equivalent expressions." The worksheets below practice this standard. Each one is a free printable PDF with an answer key, comes in multiple versions, and can also be assigned digitally - no login or account needed.
Expressions & Equations Apply and extend previous understandings of arithmetic to algebraic expressions.3Apply the properties of operations to generate equivalent expressions.