I got some foam leaf stickers from the Oriental Trading Company. I did similar word problem activity a few years ago!
Here is what we did with them! Each kiddo got their own tree to color.
Once they had their tree all colored I gave them a random amount of leaves.
They stuck the leaves wherever they wanted on or around their tree.
When they were done they traced the bottom sentence and filled in the blank with the number of leaves they were given.
They LOVED this project and it was great counting practice! If you want a copy of this page click HERE!