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Understanding numbers, their relationships and numerical reasoning

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Using symbols to solve equations and express patterns

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Number Sense

Number Sense

Understanding numbers, their relationships and numerical reasoning

Algebra

Algebra

Using symbols to solve equations and express patterns

Geometry

Geometry

Studying shapes, sizes and spatial relationships in mathematics

Measurement

Measurement

Quantifying and comparing attributes like length, weight and volume

Operations

Operations

Performing mathematical operations like addition, subtraction, division

Probability and Statistics

Probability and Statistics

Analysing uncertainty and likelihood of events and outcomes

Community Resources
Get started with our Resources
GeoGebra

Calculator Suite

Explore functions, solve equations, construct geometric shapes

GeoGebra Graphing

Graphing Calculator

Visualise equations and functions with interactive graphs and plots

GeoGebra Geometry

Geometry

Explore geometric concepts and constructions in a dynamic environment

GeoGebra 3D Calculator

3D Calculator

Graph functions and perform calculations in 3D

GeoGebra Scientific Calculator

Scientific Calculator

Perform calculations with fractions, statistics and exponential functions

GeoGebra Notes

Notes

Explore our online note taking app with interactive graphs, slides, images and much more

App Downloads
Get started with the GeoGebra Apps
  1. Math
  2. Number Sense
  3. Natural Numbers
  4. Classifying Prime and Composite Numbers

Classifying Prime and Composite Numbers

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GeoGebra Content Team
By GeoGebra
#number-sense
#natural-numbers

Practice

GR. 4-5

GRADES 4-5

Skill:

Identify prime and composite numbers less than 100.

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Classifying Prime and Composite Numbers

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Determine whether a number is prime, composite, or neither and visualize the reasoning behind the answer using area models.

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Prerequisite Resources

Preview Image

Exploration

GR. 4-5

GRADES 4-5

Visualizing the Greatest Common Factor Using a Model

Preview Image

Practice

GR. 4-5

GRADES 4-5

Finding the Greatest Common Denominator

More from Natural Numbers

Preview Image

Exploration

GR. 4-5

GRADES 4-5

Guess the Number

Preview Image

Exploration

GR. 4-5

GRADES 4-5

Reading Number Names from 1,000 to 9,999

Preview Image

Exploration

GR. 4-5

GRADES 4-5

The Expansion Machine: Standard Form to Expanded Form

Next Resources

Preview Image

Exploration

GR. 4-5

GRADES 4-5

Expressing Composite Numbers as a Product of Prime Numbers

Preview Image

Exploration

GR. 4-5

GRADES 4-5

Factoring with Trees

Preview Image

Practice

GR. 4-5

GRADES 4-5

Making Prime Factorization Trees

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