5.
Integers ending in 0 are ambiguous because there is no way of establishing whether the number is accurate to the last digit (zero) or has been rounded to the nearest ten.
Significant number of 23080micrometer
6 significant figures.
One significant figure.
1 significant figure.
1 significant figure.
1 significant figure.
The 1st four of them
It has 1 significant figure.
0.004 has 1 significant figure.
1 significant figure. It can also be written as 4x10^6 (one sig fig)
Two significant figure
1 significant figure.
It has 1 significant figure.
3 significant figures.
3 significant figures.
One significant figure
1 significant figure.
10 significant figures.