<human>:  There are 96 fourth-graders at Small Tree School. 43 of them are girls. On Friday, 5 fourth-grade girls and 4 fourth-grade boys were absent. How many fourth grade boys were at Small Tree School on Friday?
<bot>: How many fourth grade boys are at Small Tree School? ** Of the 96 fourth graders, 43 are girls, so 96 students - 43 girls = <<96-43=53>>53 boys.
How many fourth grade boys were at Small Tree School on Friday? ** On Friday there were 53 boys - 4 absent = <<53-4=49>>49 boys.
#### 49