In elementary school my son would not memorize addition and multiplication and just use strategies like this.
That became a problem later on as we just can handle a finite number of intermediary results in our brain, so just memorizing the tables reduces a lot of mental load for calculation in your brain.
Another thing that helped him a lot was just writing down intermediaries on a piece of paper.
Btw it was a bit similar for me, I just got the table memorized perfectly and got faster doing simple calculations in my mind than using a calculator when I was training the multiplication and addition tables with my son.
Is this not just how people do simple math? Why the hell else did they make us just memorize multiplication tables?
three of the six falls into the gap between the 7 and 10, leaving 3 sticking out the top = 13.
I have no idea if this is normal or not
That’s exactly how I do it!
I think I do something similar. Basically.10-7=3, 3+3=6 so 7+3+3=13 or simplified 7+6=13. Or like the above with 7+7=14 therefore 7+6=13
In elementary school my son would not memorize addition and multiplication and just use strategies like this.
That became a problem later on as we just can handle a finite number of intermediary results in our brain, so just memorizing the tables reduces a lot of mental load for calculation in your brain.
Another thing that helped him a lot was just writing down intermediaries on a piece of paper.
Btw it was a bit similar for me, I just got the table memorized perfectly and got faster doing simple calculations in my mind than using a calculator when I was training the multiplication and addition tables with my son.