Dear Lila,
You were in your room tonight and when I went in to check on you, you weren't reading books or playing with dolls as I had expected. Instead, you were making up subtraction problems and solving them by yourself. You had filled both sides of a piece of paper with problems such as 7-1 and 2-1 . . . and you had solved each one correctly, too!
So proud and impressed, little girl!
Love,
Mom