Well, darling, if you want to round 38562.7 to 1 significant figure, you'd end up with 40000. Yes, you heard me right, 40,000. That's just the way the cookie crumbles when it comes to significant figures.
It has 1 significant figure.
4252 to 1 significant figure is 4000.
1150 to 1 significant figure is 1000
9753261 to 1 significant figure is 10,000,000
0.019 to 1 significant figure is 0.02 (significant figure is counted from the left with 1st significant being the first non-zero from the left)
37.753 rounded to one significant figure becomes 40
It has 1 significant figure.
Rounded to 1 significant figure it is 0.4
4916 to 1 significant figure is 5000
1150 to 1 significant figure is 1000
9753261 to 1 significant figure is 10,000,000
4252 to 1 significant figure is 4000.
654 rounded to one significant figure becomes 700.
1534 to 1 significant figure is 2000.
0.00009893 to 1 significant figure = 0.0001
6694 rounded to 1 significant figure is 7000
10920 to 1 significant figure is 10000