#### MGSE6.EE.2a

Write expressions that record operations with numbers and with letters standing for numbers.

#### MGSE6.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.

#### MGSE6.EE.6

Use variables to represent numbers and write expressions when solving a real-world or mathematical problem; understand that a variable can represent an unknown number, or, depending on the purpose at hand, any number in a specified set.