Massachusetts Curriculum Frameworks
MA.6.EE. Expressions and Equations
6.EE.A. Apply and extend previous understandings of arithmetic to algebraic expressions.
6.EE.A.1. Write and evaluate numerical expressions involving whole-number exponents.
6.EE.A.2. Write, read, and evaluate expressions in which letters stand for numbers.
6.EE.A.2.b. Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, and coefficient); view one or more parts of an expression as a single entity. For example, describe the expression 2(8 + 7) as a product of two factors; view (8 + 7) as both a single entity and a sum of two terms.
6.EE.A.3. Apply the properties of operations to generate equivalent expressions. For example, apply the distributive property to the expression 3(2 + x) to produce the equivalent expression 6 + 3x; apply the distributive property to the expression 24x + 18y to produce the equivalent expression 6(4x + 3y); apply properties of operations to y + y + y to produce the equivalent expression 3y.