3 ms·I would like to be able to undo any part of a calculation without trashing the whole row.by jrmg 4y agoI would like to be able to undo any part of a calculation without trashing the whole row.pekim 4y agoYou can click either of the numbers, or the operator, in the row to remove them.jrmg 4y agoNot after a row is filled, even if you haven’t moved on to the next row yet.