Question: In doing a problem, a student adds 46.9 m and 5.72 m and then subtracts 38 m from the result. (a) How many decimal places

In doing a problem, a student adds 46.9 m and 5.72 m and then subtracts 38 m from the result.
(a) How many decimal places will the final answer have: (1) zero, (2) one, or (3) two? Why?
(b) What is the final answer?

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