This is a collection of our adding 2 digit and 1 digit numbers with regrouping worksheets with answer keys. You can use these math sheets as a review, homework, quiz, pre test, assessment, drill, or practice for your students in the 1st and 2nd grades. *** View our Addition Bundle to save and get more activities.There are five sets in this product: Aligned Vertical Addition (20 questions) Color the Correct Answer (3 choices) Find the Sum, Show Solution Fill in the Blanks, Missing Addend Match 2