The Common Core in Oregon
Skills available for Oregon eighth-grade math standards
Standards are in black and IXL math skills are in dark green. Hold your mouse over the name of a skill to view a sample question. Click on the name of a skill to practice that skill.
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- Oregon Mathematics Standards Oregon Mathematics Standards
- Oregon Common Core State Standards Oregon Common Core State Standards
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8.AEE Algebraic Reasoning: Expressions and Equations
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8.AEE.A Expressions and equations work with radicals and integer exponents.
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8.AEE.A.1 Apply the properties of integer exponents using powers of 10 to generate equivalent numerical expressions.
- Exponents with negative bases (8-D.4)
- Understanding negative exponents (8-D.6)
- Evaluate negative exponents (8-D.7)
- Multiplication with exponents (8-D.9)
- Division with exponents (8-D.10)
- Multiplication and division with exponents (8-D.11)
- Power rule (8-D.12)
- Evaluate expressions using properties of exponents (8-D.13)
- Identify equivalent expressions involving exponents I (8-D.14)
- Identify equivalent expressions involving exponents II (8-D.15)
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8.AEE.A.2 Represent solutions to equations using square root and cube root symbols.
- Square roots of perfect squares (8-F.1)
- Positive and negative square roots (8-F.3)
- Relationship between squares and square roots (8-F.5)
- Solve equations using square roots (8-F.6)
- Cube roots of positive perfect cubes (8-F.7)
- Solve equations using cube roots (8-F.9)
- Identify rational and irrational square roots (8-I.1)
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8.AEE.A.3 Estimate very large or very small quantities using scientific notation with a single digit times an integer power of ten.
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8.AEE.A.4 Perform operations with numbers expressed in scientific notation.
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Checkpoint opportunity
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8.AEE.B Understand the connections between proportional relationships, lines, and linear equations.
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8.AEE.B.5 Graph proportional relationships in authentic contexts. Interpret the unit rate as the slope of the graph, and compare two different proportional relationships represented in different ways.
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8.AEE.B.6 Write the equation for a line in slope intercept form y = mx + b, where m and b are rational numbers, and explain in context why the slope m is the same between any two distinct points.
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Checkpoint opportunity
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8.AEE.C Analyze and solve linear equations and pairs of simultaneous linear equations.
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8.AEE.C.7 Solve linear equations with one variable including equations with rational number coefficients, with the variable on both sides, or whose solutions require using the distributive property and/or combining like terms.
- Which x satisfies an equation? (8-Y.1)
- Model and solve equations using algebra tiles (8-Y.3)
- Solve two-step equations (8-Y.8)
- Solve two-step equations: complete the solution (8-Y.9)
- Solve one-step and two-step equations: word problems (8-Y.10)
- Solve equations involving like terms (8-Y.11)
- Solve equations with variables on both sides (8-Y.12)
- Solve equations with variables on both sides: fractional coefficients (8-Y.13)
- Solve equations with the distributive property (8-Y.14)
- Solve multi-step equations (8-Y.15)
- Solve multi-step equations with fractional coefficients (8-Y.16)
- Solve equations: mixed review (8-Y.17)
- Solve multi-step equations: complete the solution (8-Y.18)
- Find the number of solutions (8-Y.19)
- Create equations with no solutions or infinitely many solutions (8-Y.20)
- Rearrange multi-variable equations (8)
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8.AEE.C.8 Find, analyze, and interpret solutions to pairs of simultaneous linear equations using graphs or tables.
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Checkpoint opportunity
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8.AFN Algebraic Reasoning: Functions
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8.AFN.A Define, evaluate, and compare functions.
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8.AFN.A.1 Understand in authentic contexts, that the graph of a function is the set of ordered pairs consisting of an input and a corresponding output.
- Interpret graphs of proportional relationships (8-K.10)
- Identify functions (8-BB.1)
- Identify functions: graphs (8-BB.2)
- Does (x, y) satisfy the linear function? (8-BB.3)
- Evaluate a linear function (8-BB.9)
- Complete a table for a linear function (8-BB.10)
- Complete a table and graph a linear function (8-BB.11)
- Interpret points on the graph of a linear function (8-BB.12)
- Find values using function graphs (8-BB.23)
- Complete a table for a function graph (8-BB.24)
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8.AFN.A.2 Compare the properties of two functions represented algebraically, graphically, numerically in tables, or verbally by description.
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8.AFN.A.3 Understand and identify linear functions, whose graph is a straight line, and identify examples of functions that are not linear.
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Checkpoint opportunity
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8.AFN.B Use functions to model relationships between quantities.
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8.AFN.B.4 Construct a function to model a linear relationship in authentic contexts between two quantities.
- Write equations for proportional relationships from tables (8-K.2)
- Write equations for proportional relationships from graphs (8-K.5)
- Find the slope of a graph (8-AA.1)
- Find the slope from two points (8-AA.2)
- Find the slope from a table (8-AA.)
- Slope-intercept form: find the slope and y-intercept (8-AA.4)
- Graph a line using slope (8-AA.5)
- Write a linear equation from a slope and y-intercept (8-AA.8)
- Write a linear equation from a graph (8-AA.9)
- Write a linear equation from a slope and a point (8-AA.10)
- Write a linear equation from two points (8-AA.11)
- Constant rate of change (8-BB.8)
- Interpret the slope and y-intercept of a linear function (8-BB.13)
- Write a linear function from a table (8-BB.14)
- Write linear functions: word problems (8-BB.17)
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8.AFN.B.5 Describe qualitatively the functional relationship between two quantities in authentic contexts by analyzing a graph.
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Checkpoint opportunity
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8.NS Numeric Reasoning: Number Systems
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8.NS.A Know that there are numbers that are not rational, and approximate them by rational numbers.
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8.NS.A.1 Know that real numbers that are not rational are called irrational.
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8.NS.A.2 Use rational approximations of irrational numbers to compare size and locate on a number line.
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Checkpoint opportunity
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8.GM Geometric Reasoning and Measurement
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8.GM.A Understand congruence and similarity using physical models, transparencies, or geometry software.
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8.GM.A.1 Verify experimentally the properties of rotations, reflections, and translations.
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8.GM.A.2 Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations.
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8.GM.A.3 Describe the effect of dilations, translations, rotations and reflections on two-dimensional figures using coordinates.
- Translations: find the coordinates (8-R.7)
- Translations: write the rule (8-R.8)
- Reflections over the x- and y-axes: find the coordinates (8-R.10)
- Reflections: find the coordinates (8-R.12)
- Rotations: find the coordinates (8-R.14)
- Reflections and rotations: write the rule (8-R.)
- Describe transformations (8-R.)
- Sequences of congruence transformations: graph the image (8-R.15)
- Dilations: graph the image (8-S.2)
- Dilations: find the coordinates (8-S.3)
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8.GM.A.4 Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and/or dilations.
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8.GM.A.5 Use informal arguments to establish facts about interior and exterior angles of triangles and angles formed by parallel lines cut with a transversal.
- Find missing angles in triangles (8-Q.7)
- Find missing angles in triangles using ratios (8-Q.8)
- Triangle Angle-Sum Theorem (8-Q.9)
- Exterior Angle Theorem (8-Q.12)
- Identify alternate interior and alternate exterior angles (8-Q.16)
- Transversals of parallel lines: name angle pairs (8-Q.17)
- Transversals of parallel lines: find angle measures (8-Q.18)
- Transversals of parallel lines: solve for x (8-Q.19)
- Angle-angle criterion for similar triangles (8-S.6)
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Checkpoint opportunity
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8.GM.B Understand and apply the Pythagorean Theorem.
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8.GM.B.6 Distinguish between applications of the Pythagorean Theorem and its Converse in authentic contexts.
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8.GM.B.7 Apply the Pythagorean Theorem in authentic contexts to determine unknown side lengths in right triangles.
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8.GM.B.8 Apply the Pythagorean Theorem to find the distance between two points in a coordinate system.
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8.GM.C Solve mathematical problems in authentic contexts involving volume of cylinders, cones, and spheres.
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8.GM.C.9 Choose and use the appropriate formula for the volume of cones, cylinders, and spheres to solve problems in authentic contexts.
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8.DR Data Reasoning
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8.DR.A Formulate statistical investigative questions.
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8.DR.A.1 Formulate statistical investigative questions to articulate research topics and uncover patterns of association seen in bivariate categorical data.
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8.DR.B Collect and consider data.
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8.DR.B.2 Collect or consider data using surveys and measurements to capture patterns of association, and critically analyze data collection methods.
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8.DR.C Analyze, summarize, and describe data.
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8.DR.C.3 Analyze patterns of association between two quantitative or categorical variables and reason about distributions to compare groups.
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8.DR.D Interpret data and answer investigative questions.
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8.DR.D.4 Interpret scatter plots for bivariate quantitative data to investigate patterns of association between two quantities to answer investigative questions.
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Checkpoint opportunity
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