# 8th Grade Math Skill Practice

The Number System

**Real Numbers**

Identifying rational and irrational numbers

Convert between decimals and fractions or mixed numbers

Estimate positive and negative square and cube roots

Expressions & Equations

**Exponents**

Multiplication and division with exponents

Cube roots and square roots

**Scientific Notation**

Convert between standard and scientific notation

Multiply and divide numbers written in scientific notation

**Proportional Relationships**

Unit rates

**Solve Linear Equations**

Find the number of solutions

Word problems : solve equations

**Solve Systems of Linear Equations**

Solve a system of equations by graphing

Substitution and elimination

Word problems : solve a system of equations using substitution and elimination

Functions

**Properties of Functions**

Write a linear equation from a graph

Word problems : interpret the graph of a linear function

Compare linear functions: graphs, tables, and equations

Graph a line from an equation

Rate of change

Word problems : write linear functions

Geometry

**Transformations**

Rotations, reflections, and translations: graph the image

Reflection, rotation and translation: measure of angles

Reflection, rotation and translation: parallel lines

Congruence statements and corresponding parts

Dilations, translations, rotations, and reflections: find the coordinates

Similar figures: side lengths and angle measures

**Angles, Parallel Lines, & Triangles**

Interior and exterior angles of polygons

**Pythagorean Theorem**

Converse of the Pythagorean theorem: is it a right triangle?

Pythagorean theorem: find the length of the hypotenuse

Find the distance between two points

**Volume**

Volumes of cones, cylinders, and spheres

Statistics & Probability

**Bivariate Data**

Outliers in scatter plots

Constant rate of change

Use relative frequencies calculated for rows or columns