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.
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Question: There are 42 walnut trees and 12 orange trees currently in the park.Park workers had to cut down 13 walnut trees that were damaged.How many walnut trees will be in the park when the workers arefinished?

Answer: 29.0


Question: Nancy grew 6 potatoes. Sandy grew 7 potatoes. How many potatoesdid they grow in total?

Answer: 13.0


Question: Sam's dog had puppies and 8 had spots. He gave 2 to his friends. Henow has 6 puppies. How many puppies did he have to start with?

Answer:
8.0