Select all true comparisons.

Explication

Aligned place values show 3.090 < 3.100 and 0.808 > 0.800, while 4.50 and 4.5 are equal because the zero trails the last nonzero digit. The claim 2.07 > 2.7 treats the longer decimal as larger even though 0 tenths is less than 7 tenths.