Question

Really simple significant figures problem?

so the problem is:
412.9/0.58

i got 711.89 so 2 sig figs

how would we write this


i know soo stupid but please help

Answer 1

You write with 2 sig figs?

Answer 2

711.89 is 5 sig figs, so you need to reduce it down to 2

Answer 3

so you would start from the right and chop off digits to go from

711.89

to

711.8

to

711.

to

71

then add on a 0 to get

710

That has 2 sig figs since that last zero isn't a sig fig

Answer 4

Another way to think of it is that we're rounding to the nearest ten place value (not tenth)

Answer 5

can it be 7.1x10^2

Answer 6

that works too since that's just the equivalent form in scientific notation

Answer 7

and that's more clear that there are 2 sig figs since that 0 at the end goes away