In a previous post, I wrote about and prepared reference sheets on how and in which order we as teachers should teach basic addition facts. I have extended this to now include basic subtraction facts.
Helping students acquire these skills will map out success for them in future years. Print these out and keep them in your teacher binder for your reference. We are always faced with students that have different learning experiences and even though you teach middle to higher grades you never know when you need to start right from the beginning!