Your ACT math skills
0 of 150 mastered
- New
- Learning
- Practised
- Mastered
A skill is mastered after three correct answers on at least two different days. Missed skills come back for review the next day, then after 3, 7 and 21 days.
Number and quantity
- Simplifying square rootsNew
- Zero and negative exponentsNew
- Fractional exponentsNew
- Multiplying in scientific notationNew
- Rational and irrational numbersNew
- Finding the whole from a part and its percentNew
- Converting units of a rateNew
- Adding complex numbersNew
- Multiplying complex numbersNew
- Powers of iNew
- Vector arithmetic in component formNew
- Magnitude of a vectorNew
- Matrix arithmeticNew
- Least common multipleNew
- Order of operationsNew
- Adding fractions with unlike denominatorsNew
- Percent changeNew
- Comparing numbers in different formsNew
- Rationalizing a denominatorNew
- Dividing complex numbersNew
- Greatest common factorNew
- Sharing in a ratioNew
Algebra
- Linear equationsNew
- Linear equation word problemsNew
- Linear inequalitiesNew
- Absolute value equationsNew
- Slope between two pointsNew
- Slope from standard formNew
- Equation of a line through two pointsNew
- Slope of a perpendicular lineNew
- Systems of linear equations by eliminationNew
- Systems of equations word problemNew
- Systems with no solutionNew
- Successive percent increasesNew
- Multiplying binomialsNew
- Factoring trinomialsNew
- Solving quadratics by factoringNew
- Discriminant and number of solutionsNew
- Difference of squares in a rational expressionNew
- Ratios and proportionsNew
- Distance, rate and timeNew
- Simplifying rational expressionsNew
- Laws of exponentsNew
- Evaluating expressionsNew
- Absolute value inequalitiesNew
- Translating words into expressionsNew
- Solving a formula for a variableNew
- Systems of linear equations by substitutionNew
- Quadratic formula with irrational rootsNew
- Inequality word problemsNew
- Systems of linear inequalitiesNew
- Subtracting polynomialsNew
- Factoring completelyNew
- Rational equationsNew
- Radical equations and extraneous solutionsNew
- Inverse variationNew
- Mixture problemsNew
Functions
- Function notation and evaluationNew
- Evaluating a function at an expressionNew
- Composition of functionsNew
- Domain of a square root functionNew
- Range of a quadratic function from its vertexNew
- Linear function from a table of valuesNew
- Interpreting a linear modelNew
- Vertex of a parabola in standard formNew
- Zeros of a quadratic in factored formNew
- Maximum of a quadratic modelNew
- Exponential growth by repeated doublingNew
- Exponential decay by a repeated percent decreaseNew
- Arithmetic sequencesNew
- Geometric sequencesNew
- Shifting a graphNew
- Transformations of a parabolaNew
- LogarithmsNew
- Exponential equationsNew
- Trig functions and the unit circleNew
- Period of a sine functionNew
- Inverse of a linear functionNew
- Evaluating a piecewise-defined functionNew
- Average rate of change of a quadratic functionNew
- Reading a function from a tableNew
- Equation of a linear function from its slope and a pointNew
- Vertex form of a quadraticNew
- Evaluating an exponential growth modelNew
- Intercepts of a linear modelNew
- Recursive sequencesNew
- Degrees and radiansNew
- Trig ratios of an acute angleNew
- Logarithm propertiesNew
- Absolute value functionsNew
- Sum of an arithmetic sequenceNew
Geometry
- Distance in the coordinate planeNew
- Midpoint in the coordinate planeNew
- Pythagorean theorem, finding a legNew
- Similar trianglesNew
- 30-60-90 trianglesNew
- 45-45-90 trianglesNew
- Angles in a triangleNew
- Right-triangle trigNew
- Right-triangle trigNew
- Angles and parallel linesNew
- Circumference of a circleNew
- Sector areaNew
- Equation of a circleNew
- Area of a composite figureNew
- Perimeter and costNew
- Area of a triangle from coordinatesNew
- Area of a parallelogramNew
- Interior angles of a polygonNew
- Volume of a rectangular boxNew
- Volume of a cylinderNew
- Surface area of a rectangular boxNew
- Similar figures and areaNew
- Tangent to a circle and the Pythagorean theoremNew
- Inscribed and central anglesNew
- Volume of a coneNew
- Finding an endpoint from a midpointNew
- Triangle inequalityNew
- Area of a shaded region, circle and inscribed squareNew
- Scale drawingsNew
- Interior angle of a regular polygonNew
- Supplementary angles with algebraNew
- Area of a triangleNew
- Pythagorean theorem, paths at right anglesNew
- Rotation about the originNew
Statistics and probability
- Mean of a data setNew
- Missing value from a meanNew
- Median of a data setNew
- Weighted averageNew
- Mean from a frequency tableNew
- Effect of an extreme value on mean and medianNew
- Reading charts and tablesNew
- Reading charts and tablesNew
- Spread and modeNew
- Simple probabilityNew
- Compound eventsNew
- Compound eventsNew
- The counting principleNew
- PermutationsNew
- CombinationsNew
- Expected valueNew
- Probability from a two-way tableNew
- Median of a data setNew
- Mean after removing a valueNew
- Reading a line graphNew
- Probability of A or BNew
- Complement of an eventNew
- Venn diagramsNew
- Reading a box plotNew
- Geometric probabilityNew
Use your progress on another device
Progress is kept in this browser only. Save it to a file, then load the file on another device or browser.
Progress loaded.