8th Grade Combining Polynomials Quizzes

Start with color-coding or underlining terms that have identical variables and exponents, then have students combine their coefficients. Progress from monomials and simple sums to polynomial subtraction, explicitly modeling how the distributive property changes every sign inside the second expression.

Grade 8 practice should progress from identifying like terms to adding and subtracting multi-term expressions. Include positive and negative coefficients, differently ordered terms, and problems that require students to simplify and write the result in standard form.

Grade 8 students may combine unlike terms, add exponents instead of coefficients, or distribute a negative sign to only the first term in a polynomial. Requiring students to mark like terms and rewrite subtraction as addition of the opposite makes these errors easier to identify and correct.

Every quiz includes a complete answer key and can be used as a printable PDF or in a digital format. Teachers can host the quiz as a digital quiz on Wayground or print it for paper-based classwork, homework, or offline practice, then grade physical submissions by scanning or capturing them with the Wayground for Teachers app.

This practice aligns with the Common Core emphasis on using properties of operations to generate equivalent expressions and reason about linear relationships. Combining like terms and distributing signs establish the algebraic fluency students need before advancing to broader polynomial arithmetic and functions.

For support, use expressions with clearly grouped like terms and fewer negative coefficients; for enrichment, assign multi-step subtraction problems with terms presented out of order. Wayground lets teachers customize difficulty and create alternate versions with adjusted font spacing, larger text, a dyslexia-friendly font, or translation for accessibility and language needs.

Combining polynomials is often introduced by Grade 8 as students move from simplifying linear expressions toward formal algebra. Grade 8 learners are ready for this work once they can use integer operations, exponent notation, like terms, and the distributive property accurately.