7000 has ONE significant figure. The zeros are not significant. This can be written as 7x10^3.
There are 4 significant figures in 700.0.
Just the one
Four.
One
It is: 7000 rounded to 1 significant figure
One of them.
1 of them.
6 significant figures.
One significant figure.
It is: 7000 rounded to 1 significant figure
6694 rounded to 1 significant figure is 7000
7000
7000
answer is 7200
12
One of them.
1. Unless there is a unit right after the number (like 7000 lbs), then there would be 4 significant figures.
1 of them.
1 of them.
It has 1 significant figure.
0.004 has 1 significant figure.