you round it by 10 it is 200
210
213
334
It is 0.01
round to the first significant figure
0.00009893 to 1 significant figure = 0.0001
1512 to 1 significant figure is 2000
Rounded to 1 significant figure it is 0.4
200
It is 0.01
7000
0.9
0.1
2,000,000
9000
10000000
800
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.