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Student Statement
I can find the probability of a given event occurring (including the use of the Addition Rule).
Common Core Standards
MD.B.6: Use probabilities to make fair decisions (e.g., drawing by lots, using a random number generator).
MD.B.7: Analyze decisions and strategies using probability concepts (e.g., product testing, medical testing, pulling a hockey goalie at the end of a game).
The following are examples of mistakes that should give you an idea what types of mistakes I am looking for at each level. There are a variety of possible errors while solving problems like this, so this is not an exhaustive list.
As a reminder, here is the scale that is used in class to determine your ability level for each topic:
Written Tutorial:
Below you can randomize basic probability situations. All of these can be modeled with tree diagrams and/or tables to help find the sample space. Reveal the answer with the "Check Answer" button.
*To view the answers properly, you will probably need to be on Chrome or Firefox. Safari does not always render this correctly.*