## Probability

## Overview: In this lesson you will learn how to turn a fraction into a decimal/percent. You will also learn how to state your answer for the probability problem

## Percent Answer Options

50%=equal, 75%=likely, 30%=not likely, 100%=definite, 0%=impossible

Annamarie has 2 blue marbles, 5 red marbles, and 3 yellow marbles placed in a bag. What is the probability that she will draw a blue marble out of the bag?

Step One: Write out the problem by listing the numbers in order from LEAST TO GREATEST (dark Blue)

Step Two: Find the number of items altogether (red)

Step Three: Write the number of one item over the total number of items (as a fraction) (Green)

Step Four: Divide the fraction to get to your percent (pink)

Step Two: Find the number of items altogether (red)

Step Three: Write the number of one item over the total number of items (as a fraction) (Green)

Step Four: Divide the fraction to get to your percent (pink)

First, line up all of your numbers in the problem from least to greatest: 2,3,5

Next, find the total number of all the items together: 2+3+5=10

Then, write what you are trying to find the probability of as a fraction

Finally, you divide the fraction to get your percent: You will divide 2 by 10 to get your percent

You are trying to find the probability of drawing a blue marble compared to drawing a red or yellow marble. Since there are 2 blue marbles and 10 marbles total, the fraction is 2/10.

Next, find the total number of all the items together: 2+3+5=10

Then, write what you are trying to find the probability of as a fraction

Finally, you divide the fraction to get your percent: You will divide 2 by 10 to get your percent

You are trying to find the probability of drawing a blue marble compared to drawing a red or yellow marble. Since there are 2 blue marbles and 10 marbles total, the fraction is 2/10.

What this picture shows/says;To find a percent, you will need to divide the fraction. In this problem the fraction is 2/10 so you divide 2 by 10. Since 2 is smaller that 10, you can put a decimal and add on a ZERO, only a ZERO! No other numbers because that will change the problem completely. Once you add on a decimal, bring the decimal directly up and start dividing. Also remember, a percent is two spots over from the decimal.

The percent is 20%. If you look back up at the chart you can see that 20% is closest to 30% which means that:

It is NOT likely that Annamarie will draw a blue marble out of the bag.

It is NOT likely that Annamarie will draw a blue marble out of the bag.