It is 0.01
round to the first significant figure
200
0.00009893 to 1 significant figure = 0.0001
1512 to 1 significant figure is 2000
Rounded to 1 significant figure it is 0.4
7000
2,000,000
0.9
0.1
9000
10000000
800
200
100
round to the first significant figure
I think your question is asking how you would round 17.521 to the nearest number with 1 significant figure...if that's the case, it would round to 10.
It is 0 0.00005