Look at Part 1. What operation would you use to find how many apples are in one of Mario's pies? Why?
Addition, because you need to find the combined total of green and red apples.
What expression represents the total number of apples in one of Mario's pies?
Each of Mario's pies is made with
Multiply it by 5.
So, what expression represents the total number of apples Mario would use to make 5 apple pies? (Don't evaluate this expression.)
Now, look at Part 2. How many green apples and how many red apples does Jennie use to make each pie?
2 green apples and an unknown number of red apples.
What can we use to represent the unknown number in this situation?
A variable (for example,
If you use
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