Question

Solve the problems and round accordingly: 21.3+7.2473=?

Answer 1

You are currently in the Chemistry section
I believe you would receive better and faster help if you asked this in the Math section
click the name of the section we are currently in (above) to go to the proper section :)
or click here -> http://openstudy.com/study#/groups/Mathematics

Answer 2

28.5473 (You may round accordingly, although as stated, the math section is perhaps more helpful.)

Answer 3

This is significant figures in chem 1.

Answer 4

Since the 21.3 is three sig. figs, round the answer to three sig. figs.