Why 5+5+5 doesn’t always make 15: Maths exam question divides the internet

A Year 3 pupil was marked down for the solution written out for 5x3

by Mark Molloy

 

 

Working out the answer to 5x3 may seem simple enough but the solution one student gave has sparked an online debate.

 

The maths question, which asks pupils to work out 5x3 using the repeated addition strategy, was posted on Reddit.

Full article: http://www.telegraph.co.uk/news/newstopics/howaboutthat/11960777/Why-555-doesnt-always-make-15-Maths-exam-question-divides-the-internet.html