The famous doctor, Dr. Doozarella treated 62 people today. She treated 34 this morning. How many did she treat during the rest of the day?
This is a subtraction problem because we want to know how many people were treated by the doctor during the rest of the day. We take the total number of people who saw the doctor in the morning and then we subtract the number of people who came in during the later part of the day.
The keywords to look out for in a problem involving subtraction are: take away; how many more; how many less; how many left; greater; smaller.