TASK DEFINITION: You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
PROBLEM: Benny 's high school played 39 baseball games this year . He attended 14 games . How many baseball games did Benny miss ?

SOLUTION: 25

PROBLEM: 13 ducks are swimming in a lake . 20 more ducks come to join them . How many ducks are swimming in the lake ?

SOLUTION: 33

PROBLEM: Sam had to wash 40 short sleeve shirts and 23 long sleeve shirts before school . If he had only washed 29 of them by the time school started , how many did he not wash ?

SOLUTION:
34