This Easter Math Mystery activity with addition and subtraction with regrouping worksheets will engage students by taking them on a journey to solve and investigate a CSI Easter math crime. In these Easter activities and problems, students narrow down the suspects by completing the activities and worksheets, marking them off from the suspect list until one person is left. Easter and Spring fun. This case includes3 Digit addition and subtraction with regroupingSkip counting by 10 with numbers up