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8th Grade Math Lessons
Free 8th Grade math lessons are aligned with Common Core Mathematics Standards.
The Number System
Know that there are numbers that are not rational, and approximate them by rational numbers.
8.NS.A.1
* Know that numbers that are not rational are called irrational.
* Understand informally that every number has a decimal expansion; for rational numbers show that the decimal expansion repeats eventually,
* and convert a decimal expansion which repeats eventually into a rational number.
8.NS.A.2
* Use rational approximations of irrational numbers to compare the size of irrational numbers,
* locate them approximately on a number line diagram,
* and estimate the value of expressions (e.g., π ).
2
Expressions and Equations
Functions
Geometry
Statistics & Probability
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