# Fourth grade math lessons

Brush up on important topics with IXLâ€™s fourth grade math lessons! Once you're ready, start practicing what you've learned in one of IXL's skills.

#### Number sense

#### Multiplication

#### Division

#### Properties and mixed operations

#### Fractions

#### Adding fractions

#### Subtracting fractions

#### Multiplying fractions

#### Decimals

#### Geometry

- Lines, line segments, and rays
- Parallel and perpendicular lines
- What is an angle?
- Types of angles
- Measuring angles with a protractor
- Types of triangles
- Types of quadrilaterals
- Parallelograms
- Rhombuses
- Rectangles
- Squares
- Trapezoids
- Kites
- Regular polygons
- Perimeter
- Area of rectangles
- Area of compound shapes
- Lines of symmetry