Skip to main content
Pennsylvania Standards

Pennsylvania 8th Grade Math Standards

All 12 Pennsylvania math standards for 8th grade, each explained in plain English. The official wording is in Pennsylvania Department of Education's document, linked at the end of this page.

12 standards

The Number System

2 standards
CC.2.1.8.E.1
Tell rational and irrational numbers apart, knowing rational numbers have decimals that end or repeat, and write repeating decimals as fractions.
CC.2.1.8.E.4
Approximate irrational numbers with rational ones and place them on a number line, like showing √2 falls between 1.4 and 1.5.

Expressions and Equations

3 standards
CC.2.2.8.B.1
Use exponent rules, square and cube roots, and scientific notation to rewrite and compare numbers, like 3² × 3⁻⁵ = 1/27.
CC.2.2.8.B.2
Graph proportional relationships with the unit rate as the slope, and use similar triangles to show why a line has the same slope everywhere, giving y = mx + b.
CC.2.2.8.B.3
Solve linear equations in one variable, including ones with one, no, or infinitely many solutions, and solve systems of two equations by graphing or algebra.

Functions

2 standards
CC.2.2.8.C.1
Understand a function as a rule giving exactly one output for each input, and compare functions shown as tables, graphs, equations, or words.
CC.2.2.8.C.2
Write functions to model straight-line relationships, find the rate of change and starting value, and describe graphs, like where they rise or fall.

Geometry

3 standards
CC.2.3.8.A.1
Use the volume formulas for cylinders, cones, and spheres to solve real-life problems, like how much a cone-shaped cup holds.
CC.2.3.8.A.2
Use rotations, reflections, translations, and dilations to show when shapes are congruent or similar, and explore angle facts in triangles and parallel lines.
CC.2.3.8.A.3
Explain why the Pythagorean Theorem works, use it to find missing sides of right triangles, and find distances between points on a grid.

Statistics and Probability

2 standards
CC.2.4.8.B.1
Make and read scatter plots of paired data, describe patterns like clusters or straight-line trends, and fit a line to make predictions.
CC.2.4.8.B.2
Use two-way tables of frequencies to see whether two categories are related, like whether students with curfews also tend to have chores.

The official Pennsylvania documents

The plain-English lines on this page are EMStudio's own explanations of Pennsylvania's standards, not the official wording, which Pennsylvania Department of Education publishes in the documents above. Codes and strand names identify each standard.