Skip to content

Learn

Choose what you want to practice.

Try Learn →Help me choose →

01

+

Arithmetic

Operations, order, estimation, and number sense

AdditionBuild instant recall of sums.SubtractionReverse familiar addition facts.MultiplicationLearn products through repetition.DivisionRecall exact quotients fluently.

More arithmetic options

Practice this topic →Play a duel in this topic →

02

½

Fractions

Fractions, decimals, equivalence, and comparison

Equivalent fractionsScale numerators and denominators together.DecimalsMove fluently between fractions and decimals.OperationsAdd and subtract fractions accurately.ComparisonCompare fractional size without guessing.

More fractions options

Practice this topic →Play a duel in this topic →

03

%

Percent & ratio

Rates, proportions, discounts, and change

Percent of a quantityFind a percentage of a number.RatiosScale equivalent ratios.ProportionsSolve equal-rate relationships.Percent changeMeasure increases and decreases.

More percent & ratio options

Practice this topic →Play a duel in this topic →

04

x

Algebra

Expressions, equations, patterns, and functions

ExpressionsEvaluate expressions by substitution.Linear equationsUndo operations to isolate a variable.PatternsRecognize and extend numerical rules.FunctionsEvaluate and interpret function rules.

More algebra options

Practice this topic →Play a duel in this topic →

05

△

Geometry

Length, area, angles, and spatial reasoning

Perimeter and areaMeasure common two-dimensional figures.AnglesUse angle sums and relationships.TrianglesReason with sides, angles, and area.Coordinate geometryMeasure position on the coordinate plane.

More geometry options

Practice this topic →Play a duel in this topic →

06

∫

College basics

Functions, limits, derivatives, and analytic thinking

FunctionsAnalyze functions, sequences, inverses, and systems.LimitsReason about continuity, one-sided behavior, and infinity.DerivativesDifferentiate polynomial, rational, composite, exponential, and trigonometric models.Analytic applicationsConnect coordinate models, sequences, rates, extrema, optimization, and motion.

More college basics options

Practice this topic →Play a duel in this topic →

Arithmetic tables →Recall facts and missing numbers.Mental Arithmetic →Train calculation and strategy.Beyond Level 100 →Explore Infinite eligibility.