Door 3: Addition with Regrouping
Regrouping (carrying) is needed when a column adds up to 10 or more
Read the concepts on the whiteboard — your weapons — then walk the corridor and solve the questions to clear the door.
About Door 3: Addition with Regrouping
This door covers Addition with Regrouping from the Grade 3 maths syllabus. First you study the concepts and worked examples on the whiteboard, then you face a corridor of questions — answer correctly to gain energy and build a combo; a wrong answer lets a monster drain your energy. Clear every question to earn up to three stars.
Want to revise first? Read the full lesson in Addition with Regrouping concepts, or jump to another door.