One significant figure.
6 significant figures.
1 significant figure.
1 significant figure.
1 significant figure.
It has 1 significant figure.
0.004 has 1 significant figure.
0.3 has one significant figure.
There is one significant figure in .00000004.
1 significant figure. It can also be written as 4x10^6 (one sig fig)
Two significant figure
One significant figure.
10 significant figures.
One significant figure
1 significant figure.
One significant figure.
3 significant figures.