Fun, engaging and easy to use bingo activity on addition and subtraction of negative numbers. The competitive element (especially with prospect of rewards) really helps to get pupils involved in the game.

The answers are on the second slide for the pupils to choose at random, either in their books or using the 3 x 3 empty grids that can be printed from the first slide.

The files are in Powerpoint format so they can be used on any system.