It's already there.
13
0.000892 to 1 significant figure is 0.0009 (1st significant figure is the first non-digit from the left, where in this case you can omit the number 2 since it will make no difference to the answer)
It's already there.
1. Unless there is a unit right after the number (like 7000 lbs), then there would be 4 significant figures.
10920 to 1 significant figure is 10000
470 rounded to one significant figure is 500
7000
It is: 7000 rounded to 1 significant figure
6694 rounded to 1 significant figure is 7000
7000
answer is 7200
It is 0.01
2,000,000
0.9
0.1
9000
10000000
800