Tidy Number Strategy

WALT: We are learning to use the making tens/tidy number strategy

9+6=?
I know that 6-1=5
Take the 1 and add it on the 9
9+1=10
then take the 5 and add it on to the 10
10+5=15
So, 9+6=15

7+6=?
I know that 7+3=10
Take the 3 and add it and on to the 10
10+3=13
So, 7+6=13

It was a little bit hard I liked it because I like learning hard things


Do you know any strategies?