TASK DEFINITION: You are provided with an arithmetic question. Your task is to compute the solution using the given arithmetic operations. The only arithmetic operators needed to answer the questions are'+'(addition) and'-'(subtraction). The answer should be correct to one decimal place.
PROBLEM: A dust storm sweeps across the prairie. It covers 64535 acres of theprairie in dust, but leaves 522 acres untouched. How many acresdoes the prairie cover?

SOLUTION: 64013.0

PROBLEM: Sara picked 35 pears and 27 apples from the orchard. She gave 28pears to Dan. How many pears does Sara have?

SOLUTION: 7.0

PROBLEM: Sam has 110 books. Joan has 102 books. How many books do theyhave together?

SOLUTION:
212.0