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.

There are 31 short trees and 32 tall trees currently in the park. Parkworkers will plant short trees today. When the workers are finishedthere will be 95 short trees in the park. How many short trees did theworkers plant today?
64.0

There are 2 maple trees and 5 popular trees currently in the park.Park workers will plant 9 maple trees today. How many maple treeswill the park have when the workers are finished?
11.0

At the beach, Miki and her sister both built sandcastles and then measured their heights. Miki's sandcastle was 0.83 foot tall and her sister's was 0.53 foot tall. How much taller was Miki's sandcastle than her sister's?

0.3

