*MCC6.EE.2a -* Write expressions that record operations with numbers and with letters standing for numbers. *MCC6.EE.2b* - Identify parts of an expression using mathematical terms (sum, term, product, factor, quotient, coefficient); view one or more parts of an expression as a single entity.

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**MCC6.EE.2c -* Evaluate expressions at specific values of their variables. Include expressions that arise from formulas used in real-world problems. Perform arithmetic operations, including those involving whole-number exponents, in the conventional order when there are no parentheses to specify a particular order (Order of Operations).

*MCC6.EE.3* - Apply the properties of operations to generate equivalent expressions.

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* *MCC6.EE.4 *- Identify when two expressions are equivalent (i.e., when the two expressions name the same number regardless of which value is substituted into them.)