All Common Core: 7th Grade Math Resources
Example Questions
Example Question #11 : Represent Sample Spaces For Compound Events: Ccss.Math.Content.7.Sp.C.8b
Kara is going to roll a die and spin a spinner, shown below. What is the probability that she will roll a number other than and the spinner will land on yellow?
To help us solve this problem, we can make a tree diagram to show all of the possible outcomes of rolling a die and spinning the spinner:
As shown from the diagram, we have possible outcomes. There are five numbers other than : , , , , and and for those five numbers, the spinner can land on yellow once; thus, the probability is
Example Question #877 : Grade 7
Charlie is going to roll a die and flip a coin. What is the probability that he will roll a number other than and the coin will land with heads facing up?
To help us solve this problem, we can make a tree diagram to show all of the possible outcomes of rolling a die and flipping a coin:
As shown from the diagram, we have possible outcomes. There are five other numbers on a die, other than : , , , , and . Looking at those numbers on the diagram, we can see that there are five ways to roll a number other than and for the coin to land on heads; thus, the probability is