Teachers are instructed to call attention to the standard algorithm and make sure that students notice how is obscures place value by "carrying a 1" and how it is neither concise nor clear.
Contrast that with Singapore Math where kids just solve a bunch a problems to practice what they've learned in class, and, as there are more than 3 questions, help their teachers see where their understanding might be lacking.
I would have been incensed by this investigations page, which looks like it is from a later edition than the monstrosity we dealt with because of the mistaken assumption that doing only one problem will achieve mastery.
2/3 of this math homework is meant to be completed by the parent -- probably so the kid can take it back in the next day to have the parental algorithms vilified by the teacher.
I used to staple worksheets of more appropriate math I had my children do to the investigations stuff and have them turn that in as homework. My battles with the principal go to the point that she "forbade me to speak with other parents about the curriculum in mathematics."
Investigations doesn't teach mastery of anything, and the kids have no number sense because of exercises like this. The people who profit from this program should be prosecuted.