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