Great trick for teaching how to make Students use a highlighter to find the and then circle the other number with a crayon. Although, I think it would be easier to always make 10 with the larger number, not necessarily the first number in the equation.
I am literally speechless. This technique may save my sanity: "SO SIMPLE - how to teach long division in 3 minutes or less. Teach them the "long" way first - then show them this. Hopefully this will be helpful when he learns division.