Question

For a school fundraiser, Cody needs to sell 41 boxes of cookies. So far, he has sold 11 boxes of lemon cookies to his aunt, 11 boxes of chocolate cookies to his mother, and 10 boxes of oatmeal cookies to a neighbor. How many more boxes of cookies does Cody need to sell?

Answer 1

Cody needs to sell 9 more boxes. 

In order to find this answer, we start with the total number he needs to sell, then we subtract every box he sells. 

Starting - aunt - mom - neighbor = total needed
41 - 11 - 11 - 10 = total needed
30 - 11 - 10 = total needed
19 - 10 = total needed
9 = total needed