Sullivan in Second

Students can practice adding 3-digit numbers using these self-checking digital escape rooms & mystery math riddles! The no prep activities will have your students solving addition problems using three digits with and without the need for regrouping within 1,000! There are three student activities included in this resource:Escape Room #1 is 3-digit addition without regroupingEscape Room #2 is 3-digit addition with regroupingMystery Riddles are 3-digit addition with/without regrouping (within 1,