Why are math skills so important to the quality of RI's workforce?

Rhode Island and the nation are experiencing a "skills gap" whereby high unemployment co-exists with high job-vacancy rates. Formerly, manufacturing jobs did not require nearly the math they require now. This chart, from The New York Times, indicates just how much this skills gap in the workforce has grown over time.
Also, according to Forbes Magazine, 6 out of the 10 most in-demand jobs require skills that include "knowledge of arithmetic, algebra, geometry, calculus, statistics and their application."