Economics is a very broad field with many flavors so to speak. In my uni (Europe), in the first year, atleast regarding math, we learned analysis up to Riemann integration, convex and concave functions, metric spaces and linear spaces, some multivariate analysis (partial differentiation, tangent hyperplanes, implicit functions, Lagrange multipliers), and matrix algebra and linear transformations.
It depends on your program but economics can be quite mathematical. In the second year we're learning linear programming, functional analysis, difference equations, etc.
