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: Karin 's science class weighed plastic rings for an experiment . They found that the orange ring weighed 0.08333333333333333 ounce , the purple ring weighed 0.3333333333333333 ounce , and the white ring weighed 0.4166666666666667 ounce . What was the total weight of the plastic rings ?

SOLUTION: 0.8333333333333334

PROBLEM: Paul had 42 strawberries in his basket . He picked 78 more strawberries . How many strawberries did he have then ?

SOLUTION: 120

PROBLEM: For the school bake sale Katie made pastries . She baked 7 cupcakes and 5 cookies . After the sale she had 8 to take back home . How many pastries did she sell ?

SOLUTION:
4