8.562
Inspect the 3rd decimal place . In this case it is '2'.
The rule is for 'n' decimal places , inspect the 'n+1' decimal place. If the 'n+1' decimal place is between 0 & 4 , then leave the 2nd decimal unchanged. If it is between 5 & 9 then add '1' to the second decimal place.
Since in this case the third decimaal is '2' ( between 0 & 4), then leave the 2nd decimal place unchanged. at '6'.
Hence
8.452 to 2 d.p. is 8.56 .
It is already in two decimal places as 131.88
3.441239 rounded to two decimal places is 3.44
29.7054 rounded to two decimal places is 29.71
22.238 rounded to two decimal places is 22.34
2.3432 rounded to two decimal places is 2.34
It is already in two decimal places as 131.88
11.25 is already two decimal places.
8.588 rounded to two decimal places is 8.59.
0.1717 rounded to two decimal places is 0.17
7.439 rounded to two decimal places is 7.44
22.238 rounded to two decimal places is 22.34
3.441239 rounded to two decimal places is 3.44
2.3432 rounded to two decimal places is 2.34
29.7054 rounded to two decimal places is 29.71
57.50% rounded to two decimal places = 0.58
Leave it as it is because it is already in two decimal places
The number 400.55 is already rounded to two decimal places.