Amazing Grid
Last updated at October 10, 2025 by Teachoo
Transcript
Amazing GridAn amazing grid looks like We follow these steps Circle any number Strike out the row and column of the chosen number Circle any unstruck number Repeat until there are no more unstruck numbers Add the circled numbers Let’s do this Now, First we chose –1, as black circle Then, we chose 9, as blue circle Then, we chose –2, as red circle Then, we only had –7 left. So, we chose –7, as purple circle Thus, Sum of numbers circled = –1 + 9 + (–2) + (–7) = –1 + 9 – (2 + 7) = –1 + 9 –9 = –1