Do your students need extra practice with addition and the standard algorithm?Use this resource for independent work, homework, or centers!This resource has 6 pages of addition practice.Including 150 math equations!âž• 1 page of double digit addition without regrouping. âž• 1 page of double digit addition with regrouping. âž• 1 page of mixed practice. âž• 1 page of three digit addition without regrouping. âž• 1 page of three digit addition with regrouping. âž• 1 page of three digit addition mixed practice.