3
0s to the left are insignificant and 0s that aren't right after the decimal or between other significant figures are insignificant
4 significant figures.
two
Six of them.
How close a value is to the true value.
3 sig figs.
4 significant figures.
Five significant figures.
2
two
1
Three
5 of them.
Six of them.
5 of them.
5 of them.
3 of them.
5 of them.