Grade 8 Math Worksheets

Solve systems of two linear equations by graphing (the solution is the point where the lines cross), by substitution, and by elimination, including real-world problems.

Translate real situations into a system of two linear equations and solve (8.EE.C.8).

Understand a squared plus b squared = c squared as a statement about the areas of squares on the sides, and use the converse to test whether a triangle is right-angled.

Use a^2 + b^2 = c^2 to find a missing side (the hypotenuse or a leg) of a right triangle.

Use a^2 + b^2 = c^2 to find a missing leg given the hypotenuse and one leg.

Find the distance between two points on the coordinate plane by making a right triangle from the coordinate differences and applying the Pythagorean theorem.

Find the volume of cylinders (pi r^2 h), cones (1/3 pi r^2 h), and spheres (4/3 pi r^3).

Read a scatter plot of two measurements and describe the pattern: positive or negative association, roughly linear or not, and any outliers that break the pattern.

Draw a straight line through a scatter plot and judge how well it fits — whether the points hug the line or scatter widely around it, and what that means for predictions.

Interpret the slope and y-intercept of a line of best fit in the context of the data, and use the equation to make a prediction.