Helen the hippo and her friends are preparing for thanksgiving at Helen's house. Helen baked 45 chocolate chip cookies and 46 raisin cookies yesterday. And she baked 1 raisin cookies and 36 chocolate chip cookies this morning. How many more chocolate chip cookies did Helen bake yesterday compared to today?
1. Helen baked 45 chocolate chip cookies and 46 raisin cookies yesterday. 
2. She baked 1 raisin cookies and 36 chocolate chip cookies this morning. 

3. So, yesterday she baked 45 chocolate chip cookies and today she baked 36 chocolate chip cookies. 

4. Therefore, she baked 9 more chocolate chip cookies yesterday than today.