The four and the two fives.
There are 3 significant figures in this measurement.
3 of them.
2
3
3 of them.
2 significant figures.
There are 2 significant figures in this measurement.
There are 3 significant figures in this measurement.
There are 3 significant figures in this measurement.
52.801
4
3 of them.
2
3
3 of them.
455007 means 45500 multiplied by itself 7 times: 45500 x 45500 x 45500 x 45500 x 45500 x 45500 x 45500 = 4.037195464 x 1032
45500