Not a huge worksheet fan, but sometimes additional practice is needed. Would combine with counters.
Second Grade Subtraction Worksheets: Mad Minute Math: Subtraction
This is a post by Free Homeschool Deals contributor, Lauren Hill of Mama& Learning Corner. My children and I work, work, and work some more on memorizin
Practice Three-Digit Subtraction With These Free Math Worksheets: Worksheet # 9