Door 8: Subtraction Strategies
Counting back is perfect for small jumps (like -1, -2, or -3)
Read the concepts on the whiteboard — your weapons — then walk the corridor and solve the questions to clear the door.
About Door 8: Subtraction Strategies
This door covers Subtraction Strategies from the Grade 2 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 Subtraction Strategies concepts, or jump to another door.