Eighth grade math

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IXL offers hundreds of eighth grade math skills to explore and learn! Not sure where to start? Go to your personalized Recommendations wall to find a skill that looks interesting, or select a skill plan that aligns to your textbook, state standards, or standardized test.

IXL offers hundreds of eighth grade math skills to explore and learn! Not sure where to start? Go to your personalized Recommendations wall to find a skill that looks interesting, or select a skill plan that aligns to your textbook, state standards, or standardized test.

O. Problem solving

  1. 1
    Multi-step word problems
  2. 2
    Guess-and-check word problems
  3. 3
    Use Venn diagrams to solve problems
  4. 4
    Elapsed time word problems

P. Coordinate plane

  1. 1
    Coordinate plane review
  2. 2
    Quadrants and axes
  3. 3
    Follow directions on a coordinate plane
  4. 4
    Find the distance between two points

U. Three-dimensional figures

  1. 1
    Parts of three-dimensional figures
  2. 2
    Nets of three-dimensional figures
  3. 3
    Front, side, and top view
  4. 4
    Base plans
  5. 5
    Similar solids

Eighth grade lessons

These lessons help you brush up on important math topics and prepare you to dive into skill practice!

Integers

  1. Integers
  2. Additive inverses
  3. Adding and subtracting integers
  4. Multiplying and dividing integers

Rational and irrational numbers

  1. Rational numbers
  2. Adding and subtracting rational numbers
  3. Multiplying and dividing rational numbers
  4. Irrational numbers
  5. Pi

Exponents, scientific notation, and roots

  1. Exponents
  2. Properties of exponents
  3. Scientific notation
  4. Adding and subtracting numbers in scientific notation
  5. Multiplying and dividing numbers in scientific notation
  6. Square roots
  7. Cube roots

Proportional relationships

  1. Proportional relationships
  2. Constant of proportionality

Percents

  1. Percents
  2. Simple interest
  3. Percent change

Two-dimensional figures

  1. Area of circles
  2. Circumference of circles
  3. Complementary angles
  4. Supplementary angles
  5. Adjacent angles
  6. Vertical angles
  7. Transversals of parallel lines
  8. Interior angles of triangles
  9. Exterior angles of triangles
  10. The Pythagorean theorem
  11. The converse of the Pythagorean theorem

Transformations, congruence, and similarity

  1. Transformations
  2. Translations
  3. Reflections
  4. Rotations
  5. Dilations
  6. Congruence
  7. Similarity
  8. Similar triangles

Three-dimensional figures

  1. Surface area formulas
  2. Volume formulas
  3. Volume of prisms
  4. Volume of cylinders
  5. Volume of cones
  6. Volume of spheres

Expressions

  1. Writing algebraic expressions
  2. Evaluating expressions
  3. Simplifying expressions
  4. The distributive property
  5. Expanding expressions
  6. Factoring expressions

Equations and inequalities

  1. Solving equations
  2. Multi-step equations
  3. Equations with infinitely many or no solutions
  4. Solving inequalities

Linear equations

  1. Linear equations
  2. Slope
  3. Slope-intercept form
  4. Point-slope form
  5. Systems of equations

Functions

  1. Relations and functions
  2. Independent and dependent variables

Bivariate data

  1. Scatter plots
  2. Correlation
  3. Line of best fit
  4. Two-way tables

Data and graphs

  1. Box and whisker plots
  2. Dot plots
  3. Histograms
  4. Scatter plots
  5. Correlation
  6. Line of best fit
  7. Two-way tables