100 is already rounded to one significant figure.
200 Explanation: 2 is the one significant figure. The zeros are not significant. Round up because it is closer to 200 than to 100.
It then is 40000 to one significant figure
It is 10
0.04
0.04
You round to the nearest tens place. In this case, 738 rounded to one significant figure is 700.
1.00 x 10-4
When expressing a number to one significant figure, you round the number to the nearest power of 10. In this case, 9862 to one significant figure would be 10,000. This is because the first digit from the left is 9, which is closer to 10 than 10000.
To round 350 to one sig fig, you will round to the hundreds place. 350 rounds up to 400 which is one sig fig.
Oh, dude, rounding 468 to one significant figure is like making it sound fancier but actually simpler. So, 468 would be rounded to 500 because the first significant figure is 4, and we're just like, "Eh, close enough, let's round up." So yeah, 468 becomes 500 when you're all about that one significant figure life.
To express 218 to one significant figure, you would round it to the nearest ten. Since 218 is closer to 220 than 210, the rounded value would be 220. This is because the first significant figure is the hundreds place, which is 2 in this case. Rounding to one significant figure means keeping only one non-zero digit.