# Calculate Probability as a Fraction Worksheets

How to Calculate the Probability (as a Fraction) - In mathematics, the concept of probability is very important because it is frequently used in our daily lives. So, what is the probability? Probability is a mathematical calculation of chances of an event taking place. It helps in predicting the outcomes in games, including Poker and even in a lottery. Calculation of probability is simple, easy, and nothing to be afraid of. There are two ways of calculating probability, and these include fractions and percentages. To calculate probability in a fraction, you need the total number of possible outcomes, total element in a sample space, and the total number of desired outcomes. When you divide the number of desirable outcomes by a total number of outcomes, you will get the final probability. P(desired event) = (N(desired outcomes))/(N(total number of outcomes)) You have to place the numbers into the formula and simplify it. It will give you a probability as a fraction.

• ### Basic Lesson

Demonstrates calculating probabilities as a fraction. Provides a detailed example. What is probability of getting an ace if one card is picked up from a well shuffled pack of 52 cards? 1. One card out of 52 cards can be selected in 52 different ways. 2. Out of these 52 cases four cases will favor the event selecting an ace (Ace of Clubs, Ace of Diamonds, Ace of Spades, and Ace of Hearts).

• ### Intermediate Lesson

This lesson focuses deciphering word problems into manageable probabilities. What are chances of a number less than or equal to six in single throw of a pair of dice?

• ### Independent Practice 1

Students practice determining the probability as a fraction with 20 problems. The answers can be found below. A jar contains 17 navy and 20 green marbles. A marble is drawn at random. P (not navy).

• ### Independent Practice 2

Another 20 probability as a fraction problems. The answers can be found below. A number from 25 to 45 is drawn at random. P (an even number).

• ### 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 as a fraction skills.

• ### Homework and Quiz Answer Key

Answers for the homework and quiz.

• ### Answer Key

Answers for the lesson and practice sheets.

#### Jersey Water...

There are 104 chemical elements found in the entire universe. How many of those same chemical elements can you find in the tap water in the state of New Jersey? Approximately 98! Makes you think twice before turning on the tap now doesn't it?