Calculate to the correct number of significant figures: (24.6681 x 2.38) + 332.58

the rules are different for multiplication and addition,

but the least precise value always restricts the answer.

first do the multiplication (as per standard order of operations):

24.6681 * 2.38 ≈ 58.7

since 2.38 has the fewest significant figures,

it is considered the lease precise value

then do the addition:

58.7 + 332.58 ≈ 391.3

since 58.7 has fewest figures right of decimal

it is considered least precise.

so final answer: 391.3 with four significant figures.