# Fourth grade

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

## Number sense

## Addition

- B.1Add numbers up to millions
- B.2Add numbers up to millions: word problems
- B.3Addition: fill in the missing digits
- B.4Properties of addition
- B.5Add 3 or more numbers up to millions
- B.6Addition patterns over increasing place values
- B.7Choose numbers with a particular sum
- B.8Estimate sums
- B.9Estimate sums: word problems

## Subtraction

## Multiplication

- D.1Multiplication facts to 12
- D.2Missing factors - facts to 12
- D.3Choose the multiples of a given number up to 12
- D.4Identify factors
- D.5Multiply 1-digit numbers by 2-digit numbers
- D.6Multiply 1-digit numbers by 3-digit or 4-digit numbers
- D.7Multiply 1-digit numbers by larger numbers
- D.8Multiplication patterns over increasing place values
- D.9Properties of multiplication
- D.10Distributive property: find the missing factor
- D.11Multiply using the distributive property
- D.12Estimate products - multiply by 1-digit numbers
- D.13Estimate products - multiply by larger numbers
- D.14Estimate products: word problems
- D.15Box multiplication
- D.16Lattice multiplication
- D.17Multiply a 2-digit number by a 2-digit number: complete the missing steps
- D.18Multiply a 2-digit number by a 2-digit number
- D.19Multiply a 2-digit number by a 2-digit number: word problems
- D.20Choose numbers with a particular product
- D.21Multiply a 2-digit number by a larger number: complete the missing steps
- D.22Multiply a 2-digit number by a larger number
- D.23Multiply a 2-digit number by a larger number: word problems
- D.24Multiply numbers ending in zeroes
- D.25Multiply numbers ending in zeroes: word problems
- D.26Multiply 3 numbers up to 2 digits each
- D.27Inequalities with multiplication
- D.28Multiplication input/output tables
- D.29Multiplication input/output tables: find the rule

## Division

- E.1Division facts to 12
- E.2Division facts to 12: word problems
- E.3Properties of division
- E.4Divide 2-digit numbers by 1-digit numbers
- E.5Divide 2-digit numbers by 1-digit numbers: word problems
- E.6Divide 2-digit numbers by 1-digit numbers: complete the table
- E.7Divide 2-digit numbers by 1-digit numbers: interpret remainders
- E.8Divide larger numbers by 1-digit numbers
- E.9Divide larger numbers by 1-digit numbers: word problems
- E.10Divide larger numbers by 1-digit numbers: complete the table
- E.11Divide larger numbers by 1-digit numbers: interpret remainders
- E.12Choose numbers with a particular quotient
- E.13Divide numbers ending in zeroes by 1-digit numbers
- E.14Divide by 1-digit numbers: estimate quotients
- E.15Divisibility rules
- E.16Division patterns over increasing place values
- E.17Divide numbers ending in zeroes by multi-digit numbers
- E.18Divide numbers ending in zeroes by multi-digit numbers: word problems
- E.19Divide 2-digit numbers by multiples of 10
- E.20Divide by 2-digit numbers
- E.21Divide by 2-digit numbers: word problems
- E.22Divide larger numbers by 2-digit numbers
- E.23Divide larger numbers by 2-digit numbers: word problems
- E.24Inequalities with division
- E.25Estimate quotients

## Mixed operations

- F.1Add, subtract, multiply, and divide
- F.2Addition, subtraction, multiplication, and division word problems
- F.3Estimate sums, differences, products, and quotients: word problems
- F.4Multi-step word problems
- F.5Word problems with extra or missing information
- F.6Solve word problems using guess-and-check
- F.7Choose numbers with a particular sum, difference, product, or quotient
- F.8Mentally add and subtract numbers ending in zeroes
- F.9Inequalities involving addition, subtraction, multiplication, and division

## Algebra

## Functions

## Coordinate graphs

## Data and graphs

## Logical reasoning

## Patterns and sequences

## Money

## Measurement

- N.1Measure using an inch ruler
- N.2Which customary unit is appropriate?
- N.3Compare and convert customary units of length
- N.4Compare and convert customary units of weight
- N.5Compare and convert customary units of volume
- N.6Compare and convert customary units
- N.7Conversion tables - customary units
- N.8Which metric unit is appropriate?
- N.9Compare and convert metric units of length
- N.10Compare and convert metric units of weight
- N.11Compare and convert metric units of volume
- N.12Compare and convert metric units
- N.13Conversion tables - metric units
- N.14Compare customary units by multiplying
- N.15Convert mixed customary units
- N.16Add and subtract mixed customary units
- N.17Convert between metric and customary units

## Time

## Geometry

- P.1Identify 2-dimensional and 3-dimensional shapes
- P.2Classify triangles by side lengths
- P.3Classify triangles by angles
- P.4Classify triangles
- P.5Open and closed shapes and qualities of polygons
- P.6Which 2-dimensional shape is being described?
- P.7Which 3-dimensional figure is being described?
- P.8Classify quadrilaterals
- P.9Number of sides in polygons
- P.10Count and compare sides, edges, faces, and vertices
- P.11Similar and congruent
- P.12Nets of 3-dimensional figures
- P.13Acute, right, obtuse, and straight angles
- P.14Angles of 90, 180, 270, and 360 degrees
- P.15Measure angles with a protractor
- P.16Estimate angle measurements
- P.17Adjacent angles
- P.18Parts of a circle
- P.19Perimeter
- P.20Area of squares and rectangles
- P.21Area of complex figures (with all right angles)
- P.22Area between two rectangles
- P.23Compare area and perimeter of two figures
- P.24Relationship between area and perimeter
- P.25Volume
- P.26Use area and perimeter to determine cost
- P.27Rotational symmetry
- P.28Lines of symmetry
- P.29Lines, line segments, and rays
- P.30Parallel, perpendicular, intersecting
- P.31Calculate radius, diameter and circumference

## Fraction equivalence and ordering

- Q.1Fractions review
- Q.2Mixed number review
- Q.3Find equivalent fractions using area models
- Q.4Graph equivalent fractions on number lines
- Q.5Equivalent fractions
- Q.6Fractions with denominators of 10, 100, and 1000
- Q.7Patterns of equivalent fractions
- Q.8Reduce fractions to lowest terms
- Q.9Benchmark fractions
- Q.10Compare fractions using benchmarks
- Q.11Graph and compare fractions on number lines
- Q.12Compare fractions with like numerators or denominators using models
- Q.13Compare fractions with like numerators or denominators
- Q.14Compare fractions using models
- Q.15Compare fractions
- Q.16Compare fractions in recipes
- Q.17Graph and order fractions on number lines
- Q.18Order fractions with like numerators or denominators
- Q.19Order fractions
- Q.20Find smaller or larger fractions
- Q.21Convert between improper fractions and mixed numbers

## Add and subtract fractions with like denominators

- R.1Decompose fractions into unit fractions
- R.2Decompose fractions
- R.3Decompose fractions multiple ways
- R.4Add fractions with like denominators using number lines
- R.5Subtract fractions with like denominators using number lines
- R.6Add and subtract fractions with like denominators using number lines
- R.7Add and subtract fractions with like denominators
- R.8Compare sums and differences of fractions with like denominators
- R.9Add and subtract fractions with like denominators: word problems
- R.10Add and subtract fractions with like denominators in recipes
- R.11Add 3 or more fractions with like denominators
- R.12Add and subtract mixed numbers with like denominators

## Add and subtract fractions with unlike denominators

- S.1Add fractions with unlike denominators using models
- S.2Add fractions with unlike denominators
- S.3Subtract fractions with unlike denominators using models
- S.4Subtract fractions with unlike denominators
- S.5Add up to 4 fractions with denominators of 10 and 100
- S.6Add and subtract fractions with denominators of 10, 100, and 1000
- S.7Add and subtract fractions with unlike denominators: word problems
- S.8Compare sums of unit fractions
- S.9Compare differences of unit fractions
- S.10Compare sums and differences of unit fractions
- S.11Add 3 or more fractions with unlike denominators
- S.12Add 3 or more fractions with like and unlike denominators: word problems
- S.13Find the missing numerator or denominator in addition and subtraction sentences
- S.14Add and subtract mixed numbers with unlike denominators
- S.15Add and subtract mixed numbers with like and unlike denominators: word problems
- S.16Compare sums and differences of fractions
- S.17Add and subtract fractions with unlike denominators in recipes

## Multiply fractions

- T.1Multiply unit fractions by whole numbers using number lines
- T.2Multiply unit fractions by whole numbers using models
- T.3Multiples of fractions
- T.4Multiply unit fractions and whole numbers: sorting
- T.5Multiply unit fractions by whole numbers
- T.6Multiply unit fractions by whole numbers: word problems
- T.7Multiply fractions by whole numbers using number lines
- T.8Multiply fractions by whole numbers using models
- T.9Multiply fractions and whole numbers: sorting
- T.10Multiply fractions by whole numbers
- T.11Scaling whole numbers by fractions
- T.12Multiply fractions by whole numbers: word problems
- T.13Multiply fractions and mixed numbers by whole numbers in recipes
- T.14Fractions of a number
- T.15Fractions of a number: word problems

## Decimals

- U.1What decimal number is illustrated?
- U.2Model decimals and fractions
- U.3Understanding decimals expressed in words
- U.4Place values in decimal numbers
- U.5Equivalent decimals
- U.6Graph decimals on number lines
- U.7Decimal number lines
- U.8Graph fractions as decimals on number lines
- U.9Convert fractions and mixed numbers to decimals
- U.10Convert decimals to fractions and mixed numbers
- U.11Convert decimals between standard and expanded form using fractions
- U.12Round decimals
- U.13Compare decimals on number lines
- U.14Compare decimal numbers
- U.15Put decimal numbers in order
- U.16Put tricky decimals in order
- U.17Compare decimals and fractions on number lines
- U.18Compare decimals and fractions
- U.19Number sequences involving decimals
- U.20Solve decimal problems using diagrams

## Add and subtract decimals

- V.1Add decimal numbers
- V.2Subtract decimal numbers
- V.3Add and subtract decimals: word problems
- V.4Choose decimals with a particular sum or difference
- V.5Add 3 or more decimals
- V.6Add 3 or more decimals: word problems
- V.7Complete the addition or subtraction sentence
- V.8Inequalities with addition and subtraction
- V.9Estimate sums and differences of decimals