（a) It is expansion of number sentences and ladder prime factorisation.(b) The answer is too messy and I can't make head or tails out of it
Marcus, Group 4
a) Ladder Method and expansion of number statement showing his/her understanding of the question.b) Very messy and a use of calculator or mental calculations. No further working displayed. Shows no clear understanding or cheating.
Aryan Group 4
a)ladder method/repeated divisionb)use of mental calculation or calculator and very messyYu Min Shen Group 1