Maths Library United States Grade 8 Grade 8 math, age 13 to 14 Grade 8 focuses on formulating and reasoning about expressions and equations, including linear equations and systems of equations. Students grasp the concept of a function, use linear functions to model relationships, and work extensively with integer exponents, square roots, and scientific notation. They also study geometric transformations, congruence and similarity, and apply the Pythagorean Theorem.
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Equivalent levels Topics Fractions Number Ratio Algebra Geometry Curriculum items Indicative, from Common Core State Standards. See the official document for the authoritative text.
8.NS.A.1 Distinguish between rational and irrational numbers, knowing that rational numbers have repeating or terminating decimal expansions.8.EE.A.1 Know and apply the properties of integer exponents to generate equivalent numerical expressions.8.EE.A.2 Use square root and cube root symbols to represent solutions to equations and evaluate roots of small perfect squares and cubes.8.EE.A.3 Use numbers expressed in the form of a single digit times an integer power of 10 to estimate very large or very small quantities.8.EE.B.5 Graph proportional relationships and interpret the unit rate as the slope of the graph.8.EE.C.7 Solve linear equations in one variable with rational number coefficients, including equations requiring expanding brackets.8.F.A.1 Understand that a function assigns to each input exactly one output and graph functional relationships.8.G.A.1 Verify experimentally the properties of rotations, reflections, and translations.8.G.A.5 Establish facts about the angle sum and exterior angles of triangles, and angles created by parallel lines cut by a transversal.8.G.B.7 Apply the Pythagorean Theorem to determine unknown side lengths in right triangles in real-world and mathematical problems. Previous: Grade 7 | Next: Grade 9