Past 2 weeks our teachers taught our P5 kids the concept of Proportion Transfer questions that begin with a difference. It is a challenging concept as it requires merticulous modelling. Some students question the chances of such questions being tested as they were not taught in their schools.
We agree that this type of question is not commonly tested in P5 however, we will like to highlight that in 2016 RGS SA2, the proportion transfer concept was being tested!
To play safe, we recommend all P5 students to learn this concept before SA2.