instruction:
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.
question:
Mike has 8 orange marbles, he gave Sam 4 of the marbles. Howmany orange marbles does he now have?
answer:
4.0


question:
Joan found 72 seashells and 12 starfishes on the beach. She gaveAlyssa some of her seashells. She has 28 seashell. How manyseashells did she give to Alyssa?
answer:
44.0


question:
There are 139 erasers and 118 scissors in the drawer. Jason placed131 erasers in the drawer. How many erasers are now there in total?
answer:

270.0