Ah, isn't that a lovely little number, friend? In 0.00650, we have four significant figures: 6, 5, 0, and the trailing zero after the 5. Each of these figures plays a special role in creating the beauty of this number. Just remember, every figure is important and adds to the uniqueness of the whole.
231.57 has five significant figures/numbers. All the numbers in 231.57 are significant.
The figure 18.03 has a total of four significant numbers
Three. All nonzero numbers are significant, and any zeros in between significant numbers are significant.
Because 10.00400 is 10.004, this has five significant digits (numbers).
There are 5 significant figures.
It has 4 significant figures
Four significant figures.
Three significant figures.
5 significant figures.
Four significant figures.
1 significant figure.
3 significant figures.