You are given a math word problem and you are supposed to apply addition or subtraction mathematical operators on the numbers embedded in the text to answer the following question and then only report the final numerical answer.
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Question: Fred has 5 baseball cards . Melanie bought 3 of Fred 's baseball cards . How many baseball cards does Fred have now ?

Answer: 2

Question: In March it rained 0.81 inches . It rained 0.35 inches less in April than in March . How much did it rain in April ?

Answer: 0.46

Question: Melanie picked 7 plums and 4 oranges from the orchard . She gave 3 plums to Sam . How many plums does she have now ?

Answer:
4