# Elementary Probability Worksheets

How Important Is Probability to the World? How many times do you use the word probably in your conversation? Yes, it's so common that we even lose count. Now think about the scenarios where you are using this term. It is in places where you are not cent percent sure of the outcome, but it is very much a possible one. It governs a possible outcome in a situation where there are several different outcomes. In statistics, it is a mathematical calculation of the chances of occurrence of an event. But why is this an important concept and is so commonly used in our day-to-day lives? Probability is a statistical analysis that helps organizations make predictions about a specific event, and predictions along with estimations are a critical part of research investigation. It plays a key role in the decision-making process. Moreover, it allows organizations to plan and control situations as per the outcomes of a certain incident. It is a major tool in not only in our daily lives but also in scientific investigations.

• ### Basic Lesson

Introduces the concepts of probability. Find the probability of flipping heads on a coin. Step 1: Determine number of possible outcomes. Possible Outcomes = (heads or tails) = 2 possible outcomes Step 2: Determine possible favorable outcomes. Possible favorable outcomes = heads = 1 possible favorable outcome. Step 3: Write the probability.

• ### Intermediate Lesson

This lesson uses prealgebra skills.

• ### Independent Practice 1

Students practice with 13 probability problems. The answers can be found below. Find the probability of picking a blue marble from a bag with 3 blue marbles and 7 red marbles.

• ### Independent Practice 2

Another 13 probability problems. The answers can be found below.

• ### Homework Worksheet

Reviews all skills in the unit. A great take home sheet. Also provides a practice problem.

• ### Skill Quiz

10 problems that test probability skills.

• ### Homework and Quiz Answer Key

Answers for the homework and quiz.