We recently received feedback from our 7 year old daugther's school teacher. One of the things mentioned was that our daughter still counts her fingers when she does addition and subtraction. The teacher said that it is important to find other strategies which will save time and effort.
She doesn't have any trouble identifying ones, tens, hundreds, thousands, and she does addition and subtraction on paper when we stack the numbers on top of each other. So, the understanding of numbers and positions are in place.
Although I understand that counting fingers may not be the fastest way to do addition or subtraction, I'm not quite sure which / if other strategies we have are available to "choose" fromher / us?
Answers to a similar post on this site, although about younger children, seems to agree that using fingers are perfectly fine.
However, I'm curious to know if there are any "standard" ways out there to teach our daughter to do subtraction and addition in her head - without inventing our own system for that.