Subtracting ones and tens

I am learning to Subtract ones and tens.

christmas

One day there was a girl decorating a christmas tree. On the christmas tree she put balls ,tinsel  and a silver star.
Her parents were very happy. The girl wished for a bike. It was night time  and the girl went to bed. The next day the girl ran down the stairs there was her new bike. It was pink and she rode it around the yard all day.