The Common Core State Standards teach students the algorithm for multi-digit addition and subtraction in 4th grade. But some experts say it should be taught sooner.

Consider the standard algorithm for multidigit addition and subtraction, which makes its appearance in Grade 4 of the Common Core math standards.

They simply require that students learn the standard algorithm for multidigit addition/subtraction no later than 4th grade.

A set of guidelines adopted by 45 states this year may turn children into "little mathematicians" who don't know how to do actual math.