The reported value of adding 4.56 g to 0.01860 g to the correct significant figures will be 4.58 g.
According to one of the rules guiding addition operation in significant figures., the number with the lowest significant figure to the right of the decimal place determines the number of significant figures in the final answer.
Thus, in operation: 4.56 + 0.01860, the number with the lowest significant figures to the right of the decimal place is 4.56 with 2 significant figures after the decimal place.
In other words, the final answer of the operation will also have two significant figures after the decimal.
Hence;
4.56 + 0.01860 = 4.58 g
More on significant figures can be found here: https://brainly.com/question/14359464
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