Adding Decimals St. Patrick’s Day digital worksheet 5th grade math challenge grade 5 St. Patrick’s Day themed math digital game adding decimals decimal addition digital worksheets error analysis. Make practicing decimals engaging and interactive this St. Patrick’s Day with the Shamrock or Shenanigans Digital Math Game! In this fun, game-style activity, students work through Grade 5 decimal addition problems and decide whether each completed problem is a Shamrock (correct) or Shenanigans (inc