There are 6 significant figures in this length.
There are 3 significant figures in this number.
2 of them.
4
111.009 mm rounded off to four significant figures is 111.0
2 significant figures.
There are 6 significant figures in this length.
There are 3 significant figures in this number.
3 significant figures.
It has 2 significant figures. However, the fact that it is given as 2300 mm and not as 230 cm suggests that it is, in fact significant to 4 figures.
2 of them.
4
4. The zeroes to the left are not significant, the zero to the right, is.
111.009 mm rounded off to four significant figures is 111.0
3 of them.
The least number of significant figures in any number of the problem determines the number of significant figures in the answer.
110.1mm