Simple Probability Worksheet

                    Lesson 1

 

                                                            Problem:                   There are 10 blue and 2 red marbles in a jar. Describe the probability

of picking a blue marble.

 

Is it certain, likely, unlikely, or impossible?

 

                                                            Solution                    Read the problem carefully

Step 1:                                   

                                      

Solution                    There are many more blue than red marbles. There is

Step 2:                        a good chance that the chosen marble will be blue,

                                                                                                but it is not impossible that it will be red.

 

                                                             Solution                    The answer is:  likely

 Step 3:                                                                                                             

                                                             Complete                                              

 

 

                                                            Try two practice problems:  

 

                                                                                               Is each situation certain, likely, unlikely, or impossible?

 

A.

A number is randomly picked from this list:  1, 4, 6, 9, 11, 14, 15, and 16. Describe the probability of picking a number less than 15.

B.

There are 10 pennies and 5 nickels in a bag. Describe the probability of picking a penny.

              

 

 

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