Hello!
< means less than
> means greater than
If you replace those signs with words,
3.024 is less than 3.204? Makes sense? (yes)
How about the other one?
3.024 is more than 3.204? Nope
Answer is 3.024 is less than (<) 3.204
There is a trick to remembering these signs where the side with the bigger opening belongs to the bigger number.