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: There are 34 pencils and 49 crayons in the drawer. Dan took 22pencils from the drawer. How many pencils are now in the drawer?

SOLUTION: 12.0

PROBLEM: Michelle began her pizza delivery route with 0.5 tank of gas in her car. When she made it back to the pizzeria, 0.2 tank of gas was left. How much gas did Michelle use?

SOLUTION: 0.3

PROBLEM: There are 4 walnut trees currently in the park. Park workers will plant 6 walnut trees today. How many walnut trees will the park havewhen the workers are finished?

SOLUTION:
10.0