3.
3 significant figures.
As expressed, three.
4 significant digits.
Five. All nonzero digits are significant and zeros in between significant digits are always significant.
3.
12,300 has 3 significant figures.
3 significant figures.
3 significant figures.
3 of them.
As expressed, three.
4
It has two significant digits.
3 significant digits.
It has 3 significant digits.
4 significant digits.
Five. All nonzero digits are significant and zeros in between significant digits are significant.