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.

Sally has 9 orange balloons and 4 blue balloons. She lost 2 of theorange balloons. How many orange balloons does Sally have now?
7.0

Nancy grew 6 potatoes. Sandy grew 7 potatoes. How many potatoesdid they grow in total?
13.0

Kevin bought 2 watermelons. The first watermelon was 9.9 pounds,and the second watermelon was 4.1 pounds. How many pounds ofwatermelon did Kevin buy?

14.0