Why Was A Child's "5+5+5=15" Answer Marked As Incorrect?
The web has kicked up a storm after a child was marked as incorrect for saying "5+5+5=15"on a grade school math test. The question simply asked to use repeated addition to solve 5x3. The math question is a typical question set by the Common Core for third graders. However, under the guidelines for the Common Core, you supposed to understand 5x3 as “five groups of three” not “three groups of five.”