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: A treasure hunter discovered a buried treasure chest filled with atotal of 5155 gems. 45 of the gems were diamonds, and the restwere rubies. How many of the gems were rubies?

Answer: 5110.0


Question: Alyssa's cat had 8 kittens and 8 had spots. She gave 4 to her friends.How many kittens does she now have?

Answer: 4.0


Question: Fred has 5 baseball cards. Melanie bought 3 of Fred's baseball cards.How many baseball cards does Fred have now?

Answer:
2.0