Question

What is the measurement 111.009 mm rounded off to four significant digits?

Answer 1

111.009

to 6 places is 111.009 mm
to 5 places is 111.01 mm
to 4 places is 111.0 mm
to 3 places is 111. mm
to 2 places is 1.1 x 10^2 mm
to 1 place is 1 x 10^2 mm
@ oobleck. Did I do that right?