Question

hey, 50 - 25.0 = 30 , is my answer right about significant figure?

Answer 1

no,it's 25...

Answer 2

oh, typo, it is 55 - 25.0 = 30 ^^, now, it should be 30.0 or 30?

Answer 3

it's wrong..

Answer 4

@edgarbertrand6 30 & 30.0 are the same
so 55 - 25.0 = 30 is right

Answer 5

30 and 30.0 are bit the same if you're talking about significant digits.

Answer 6

30 is correct because 50 has only one significant digit and so the answer must have only 1 significant digit.