jmc

We proceed using casework on the choice of second digit: $$\begin{array}{cc}\text{Tens digit}& \text{Units digit}\\ 0& 0,1,2,3,4,5,6,7,8,9\\ 1& 2,3,4,5,6,7,8,9\\ 2& 4,5,6,7,8,9\\ 3& 6,7,8,9\\ 4& 8,9\end{array}$$The hundreds digit can be any of $1,2,\dots ,9.$ The answer is $(10+8+6+4+2)\times 9=\boxed{270}.$