Actually, no. One of the core goals of the US Common Core math standards is to make explicit this type of compensation strategy. One of the main ones emphasized for addition/subtraction is 'taking from/completing a ten' but there is a lot of work to help kids internalize these kinds of doubles strategies!

[–] Pandantic@midwest.social 2 points 9 months ago (1 children)

Ever think that maybe this person was schooled befor 2011 when common core math was implemented?

[–] bubbalu@hexbear.net 1 points 9 months ago

Doesn't matter. The meme specifies 'someone, usually a teacher' scolding them. If the teacher is teaching math since 2011 (i.e. today) they should recognize and encourage this strategy.

Please improve your reading comprehension before trying to be a smug scold.