<p>Make sure to take as many math classes as possible.</p>
<p>You’ll definitely need:</p>
<p>-Multivariable Calc
-Linear Algebra
-Differential Equations
-Real Analysis
-Probability and Statistics</p>
<p>More math will be even better.</p>
<p>If you take all these math classes and do well in them, there will be no need to go into a masters program. There are no reputable masters programs in the US</p>