To solve this problem, we first need to find out how many of Justin's toys will fit on the shelves. If we have  shelves, and  toys fit on each shelf, we can multiply those two numbers together to find out the total number of toys that will fit. Let's let  represent the number of toys that will fit. 

Justin has  toys, so to find out how many don't fit on the shelves we need to know what is left over, so we subtract. Let's let  represent the number of toys left over. 

To solve this problem, we first need to find out how many of Justin's toys will fit on the shelves. If we have  shelves, and  toys fit on each shelf, we can multiply those two numbers together to find out the total number of toys that will fit. Let's let  represent the number of toys that will fit. 

Justin has  toys, so to find out how many don't fit on the shelves we need to know what is left over, so we subtract. Let's let  represent the number of toys left over. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder of because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder of  because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder of  because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder of  because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder of  because the question asks how many containers we can fill completely. 

When we have a set of something that we are splitting up into groups, we divide. In this case, we are splitting up cookies into containers. We have  cookies that we are dividing into containers. Each container holds  cookies, so we divide  by  to find out how many containers we can fill. We will let  represent the number of containers that we can fill. 

We drop the remainder of  because the question asks how many containers we can fill completely.