Here’s a piece of subject knowledge that I have seen used in some primary schools but I would bet that most secondary school maths teachers don’t know.
The terms highlighted in blue are those required by KS1&2 curriculum and the red ones are those used in secondary maths.
But the question is, do we need to teach pupils these terms? Clearly some of the concepts behind them, namely that addition and multiplication are commutative whereas subtraction and division are not. But does having knowledge of the words themselves help?
I’d love to hear from anyone who teaches these terms and the rationale behind that decision.