Answer:
I think they should be taught first so that later on they can use it, and also just in case they forget to know how to multiply or divide they can sorta use addition and subtract for it.
Another reason is that it is easier and since they are teaching it to younger kids it would be helpful to start off a bit easy.
Step-by-step explanation:
I hope it helps, sorry if it doesn’t!
Muffin<3
