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Addition of Algebraic Expressions (Ages 12-14) Worksheets (Earth Day Themed)

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Algebraic Expressions are expressions that contain variables, coefficient and constants. These expressions are combination of terms and at least one arithmetic operation such as addition, subtraction, multiplication and division.



3x + 8

CoefficientThe numerical factor of a multiplication expression that contains a variable.
Variable – A symbol for an unknown value.
Constant – A number that cannot change its value


Like Terms – You can only add terms in algebraic expressions if they are “like terms”. Like terms are terms whose variables and exponents are the same.

5x + 3y + 9x + 2 + 2y + 1

  • 5x and 9x are like terms
  • 3y and 2y are like terms
  • 2 and 1 are like terms

Addition of Algebraic Expressions Worksheets

This is a fantastic bundle which includes everything you need to know about Addition of Algebraic Expressions across 15+ in-depth pages. 

Each ready to use worksheet collection includes 10 activities and an answer guide. Not teaching common core standards? Don’t worry! All our worksheets are completely editable so can be tailored for your curriculum and target audience.

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