# Grade 8 maths

Here is a list of all of the maths skills students learn in grade 8! These skills are organised into categories, and you can move your mouse over any skill name to view a sample question. To start practising, just click on any link. IXL will track your score, and the questions will automatically increase in difficulty as you improve!

## Number theory

## Integers

## Operations with integers

- C.1Integer addition and subtraction rules
- C.2Add and subtract integers using counters
- C.3Add and subtract integers
- C.4Add and subtract three or more integers
- C.5Add and subtract integers: word problems
- C.6Integer multiplication and division rules
- C.7Multiply and divide integers
- C.8Evaluate expressions involving integers

## Rational numbers

## Operations with rational numbers

- E.1Reciprocals and multiplicative inverses
- E.2Add and subtract rational numbers
- E.3Add and subtract rational numbers: word problems
- E.4Apply addition and subtraction rules
- E.5Multiply and divide rational numbers
- E.6Multiply and divide rational numbers: word problems
- E.7Apply multiplication and division rules
- E.8Apply addition, subtraction, multiplication and division rules
- E.9Evaluate expressions involving rational numbers

## Exponents and roots

- F.1Understanding exponents
- F.2Evaluate exponents
- F.3Solve equations with variable exponents
- F.4Exponents with negative bases
- F.5Exponents with decimal and fractional bases
- F.6Square roots of perfect squares
- F.7Estimate square roots
- F.8Relationship between squares and square roots
- F.9Solve equations involving squares and square roots
- F.10Cube roots of perfect cubes
- F.11Estimate cube roots
- F.12Solve equations involving cubes and cube roots

## Scientific notation

## Ratios, rates and proportions

- H.1Understanding ratios
- H.2Equivalent ratios
- H.3Equivalent ratios: word problems
- H.4Unit rates
- H.5Compare ratios: word problems
- H.6Do the ratios form a proportion?
- H.7Do the ratios form a proportion: word problems
- H.8Solve proportions
- H.9Solve proportions: word problems
- H.10Estimate population size using proportions
- H.11Scale drawings: word problems
- H.12Rate of change
- H.13Constant rate of change

## Proportional relationships

- I.1Find the constant of proportionality from a table
- I.2Identify graphs of proportional relationships
- I.3Find the constant of proportionality from a graph
- I.4Write equations for proportional relationships
- I.5Graph proportional relationships
- I.6Identify proportional relationships
- I.7Find the constant of proportionality: word problems
- I.8Solve problems involving proportional relationships

## Percents

- J.1Convert between percents, fractions and decimals
- J.2Compare percents to fractions and decimals
- J.3Find what percent one number is of another
- J.4Find what percent one number is of another: word problems
- J.5Estimate percents of numbers
- J.6Percents of numbers and money amounts
- J.7Percents of numbers: word problems
- J.8Compare percents of numbers
- J.9Solve percent equations
- J.10Percent of change
- J.11Percent of change: word problems

## Consumer maths

## Units of measurement

## Problem solving

## Coordinate plane

## Two-dimensional figures

- O.1Identify and classify polygons
- O.2Classify triangles
- O.3Classify quadrilaterals
- O.4Find missing angles in triangles and quadrilaterals
- O.5Interior angles of polygons
- O.6Identify complementary, supplementary, vertical, adjacent and congruent angles
- O.7Find measures of complementary, supplementary, vertical and adjacent angles
- O.8Transversal of parallel lines
- O.9Estimate angle measurements
- O.10Find lengths and measures of bisected lines and angles
- O.11Parts of a circle

## Transformations and congruence

- P.1Symmetry
- P.2Count lines of symmetry
- P.3Draw lines of symmetry
- P.4Identify reflections, rotations and translations
- P.5Translations: graph the image
- P.6Translations: find the coordinates
- P.7Reflections: graph the image
- P.8Reflections: find the coordinates
- P.9Rotations: graph the image
- P.10Rotations: find the coordinates
- P.11Side lengths and angle measures of congruent figures
- P.12Congruence statements and corresponding parts

## Transformations and similarity

## Constructions

## Pythagoras' theorem

## Three-dimensional figures

## Geometric measurement

## Number sequences

## Expressions and properties

- W.1Write variable expressions
- W.2Write variable expressions from diagrams
- W.3Write variable expressions: word problems
- W.4Evaluate one-variable expressions
- W.5Evaluate multi-variable expressions
- W.6Evaluate absolute value expressions
- W.7Evaluate radical expressions
- W.8Evaluate rational expressions
- W.9Identify terms and coefficients
- W.10Properties of addition and multiplication
- W.11Distributive property
- W.12Simplify variable expressions using properties
- W.13Add and subtract like terms
- W.14Add, subtract, and multiply linear expressions
- W.15Factorise linear expressions
- W.16Identify equivalent linear expressions

## One-variable equations

- X.1Which x satisfies an equation?
- X.2Write an equation from words
- X.3Model and solve equations using algebra tiles
- X.4Write and solve equations that represent diagrams
- X.5Properties of equality
- X.6Solve one-step equations
- X.7Solve two-step equations
- X.8Solve equations involving like terms
- X.9Solve equations: word problems

## Linear functions

- Y.1Identify functions
- Y.2Does (x, y) satisfy the linear function?
- Y.3Identify independent and dependent variables
- Y.4Complete a table for a linear function
- Y.5Complete a table and graph a linear function
- Y.6Graph a line from an equation
- Y.7Interpret the graph of a linear function: word problems
- Y.8Write a linear function from a table
- Y.9Write linear functions: word problems

## Nonlinear functions

## Monomials and polynomials

- AA.1Identify monomials
- AA.2Model polynomials with algebra tiles
- AA.3Add and subtract polynomials using algebra tiles
- AA.4Add and subtract polynomials
- AA.5Add polynomials to find perimeter
- AA.6Multiply monomials
- AA.7Divide monomials
- AA.8Multiply and divide monomials
- AA.9Powers of monomials
- AA.10Square and cube roots of monomials

## Data and graphs

- BB.1Interpret tables
- BB.2Interpret bar graphs
- BB.3Create bar graphs
- BB.4Interpret line graphs
- BB.5Create line graphs
- BB.6Interpret line plots
- BB.7Create line plots
- BB.8Create and interpret line plots with fractions
- BB.9Interpret stem-and-leaf plots
- BB.10Interpret histograms
- BB.11Create histograms
- BB.12Create frequency charts
- BB.13Interpret box-and-whisker plots
- BB.14Scatter plots
- BB.15Interpret pie charts
- BB.16Pie charts and central angles
- BB.17Choose the best type of graph