This CC method is wrong on so many levels. One is that it reverses the order normal people read in, left to right. Another is that it dwells on the step you want left out. The "skip count" step never should be on paper! That was taken care of in earlier lessons where they learned multiples.
It's sad, really sad. A generation of us Math teachers fought "modern math", defied the authorities, and many of us taught traditional math. Now it seems almost every one who's teaching does it like they're told to, even when they know it's wrong.
You must be the generation of teachers that taught my children. She was told to ignore what the parents tell them and do it their way.......
She listened to them and tried and went back to what I and her grandpa taught her. Grandpa only had a 3rd grade education, but was a whizz at math.
Daughter is now Head comptroller of a major company in our city, taking care of all of their multiple enterprises. lol.
Grandpa taught us the quick way: 27 plus 27 equals..... doing it his easy way add 30 & 30 minus 6...round the numbers up & minus off.