If you're seeing this message, it means we're having trouble loading external resources on our website.

If you're behind a web filter, please make sure that the domains *.kastatic.org and *.kasandbox.org are unblocked.

Main content

4th grade

Not feeling ready for this? Check out Get ready for 4th grade.

Place value

Intro to place value: Place valueWriting whole numbers in expanded form: Place valueWriting whole numbers in written form: Place value
Regrouping whole numbers: Place valueHow 10 relates to place value: Place valueComparing multi-digit numbers: Place value

Addition, subtraction, and estimation

Rounding whole numbers: Addition, subtraction, and estimationAdding multi-digit numbers: Addition, subtraction, and estimationSubtracting multi-digit numbers: Addition, subtraction, and estimation

Multiply by 1-digit numbers

Comparing with multiplication: Multiply by 1-digit numbersMultiplication by 10s, 100s, and 1000s: Multiply by 1-digit numbersMulti-digit multiplication: place value and area models: Multiply by 1-digit numbers
Estimate products: Multiply by 1-digit numbersMultiply with partial products: Multiply by 1-digit numbers

Multiply by 2-digit numbers

Multiply by 10s: Multiply by 2-digit numbersMultiply 2-digit numbers with area models: Multiply by 2-digit numbersEstimate products (2-digit numbers): Multiply by 2-digit numbers
Multiply 2-digit numbers with partial products: Multiply by 2-digit numbers

Division

Remainders: DivisionDivide multiples of 10, 100, and 1,000 by 1-digit numbers: DivisionDivision with place value: DivisionDivision with area models: Division
Estimate quotients: DivisionMulti-digit division with partial quotients: DivisionMultiplication, division word problems: DivisionMulti-step word problems: Division

Factors, multiples and patterns

Factors and multiples: Factors, multiples and patternsPrime and composite numbers: Factors, multiples and patternsMath patterns: Factors, multiples and patterns

Equivalent fractions and comparing fractions

Equivalent fractions: Equivalent fractions and comparing fractionsCommon denominators: Equivalent fractions and comparing fractionsComparing fractions with unlike denominators visually: Equivalent fractions and comparing fractions
Comparing fractions with unlike denominators: Equivalent fractions and comparing fractions

Add and subtract fractions

Decomposing fractions: Add and subtract fractionsAdding and subtracting fractions with like denominators: Add and subtract fractionsAdding and subtracting fractions: word problems: Add and subtract fractionsMixed numbers: Add and subtract fractions
Adding and subtracting mixed numbers: Add and subtract fractionsAdding and subtracting mixed numbers word problems: Add and subtract fractionsFractions with denominators of 10 and 100: Add and subtract fractionsLine plots with fractions: Add and subtract fractions

Multiply fractions

Multiplying fractions and whole numbers visually: Multiply fractionsMultiplying whole numbers and fractions: Multiply fractionsMultiplying whole numbers and mixed numbers: Multiply fractions
Multiplying whole numbers and fractions word problems: Multiply fractions

Understand decimals

Decimal fractions: Understand decimalsDecimal fractions greater than 1: Understand decimalsWriting fractions as decimals: Understand decimalsDecimals in word form: Understand decimalsDecimals on the number line: Understand decimals
Regrouping decimals: Understand decimalsWriting decimals as fractions: Understand decimalsCommon fractions and decimals: Understand decimalsComparing decimals visually: Understand decimalsComparing decimals: Understand decimals

Plane figures

Types of plane figures: Plane figuresAngle introduction: Plane figuresParallel and perpendicular: Plane figures
Classifying triangles: Plane figuresClassifying geometric shapes: Plane figuresLine of symmetry: Plane figures

Measuring angles

Understanding angle measurement: Measuring anglesMeasuring angles: Measuring anglesDecomposing angles: Measuring angles

Area and perimeter

Area and perimeter: Area and perimeter

Units of measurement

Estimating mass: Units of measurementEstimating volume: Units of measurementEstimating length: Units of measurementTime: Units of measurementConverting units of mass: Units of measurement
Converting units of volume: Units of measurementConverting units of length: Units of measurementConverting units of time: Units of measurementMoney word problems: Units of measurementConversion word problems: Units of measurement

Course challenge

Test your knowledge of the skills in this course. Have a test coming up? The Course challenge can help you understand what you need to review.
Community questions