using formulas Worksheets

Free algebra worksheets with answer key. No login or account needed. Below are a variety of topics from simplifying expressions or identifying coefficients to solving inequalities, graphing lines, and finding combinations. A grading column and quick grade scale maker grading a breeze and a modified pages help with lower level learners or when just introducing a topic. Great for teachers or for homeschool.

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Using Formulas

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Using Formulas

About these worksheets

Students apply mathematical formulas to solve geometry problems involving right and non-right triangles. These worksheets cover the Pythagorean theorem for finding missing side lengths and the Law of Cosines for calculating unknown angles. Designed for eighth grade and above, these resources connect algebraic computation with geometric understanding.

using formulas Worksheets - Using Pythagorean theorem worksheet

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Using Pythagorean theorem

8g7

Identify the hypotenuse and the two legs in a right triangle.
Use the Pythagorean theorem (a² + b² = c²) to find the missing side c.
Square the leg lengths and add them correctly before solving for c.
Take a square root to get the final length of c.

using formulas Worksheets - Applying the Law of Cosines worksheet