Basic Probability Worksheets

These basic probability worksheets introduce students to the foundations of probability using simple shapes and easy counting tasks. Each worksheet includes a box of shapes and a series of questions that guide students through identifying outcomes, comparing quantities, and calculating simple probabilities as fractions. These printables are ideal for elementary students who are just beginning to explore probability concepts.

What is basic probability?

Basic probability is the study of how likely an event is to happen. For young learners, this usually involves counting objects and writing probabilities as simple fractions.

What grade level are these worksheets for?

These worksheets are designed for grades 2–5, depending on the student’s comfort with counting and fractions.

How do students calculate probability using shapes?

Students count the total number of shapes, then count how many match the event (for example, triangles). The probability is written as: favorable outcomes / total outcomes.

What Students Practice in these Basic Probability Worksheets

These worksheets help students practice essential early‑grade probability skills:

• Counting outcomes — students determine the total number of shapes in the box.
• Identifying events — students count how many circles, squares, triangles, and other shapes appear.
• Simple probability — students calculate probabilities as fractions based on the number of favorable outcomes.
• Comparing likelihood — students see which shapes are more or less likely to be selected.

These skills form the foundation for later probability topics such as compound events, ratios, and data interpretation.

Worksheet 1 Worksheet 2 Worksheet 3 Worksheet 4