Numbers 1-100 square poster published 2001 designed by Cut-The-Mustard. The 1-100 poster square is a classic poster laying out 1-100 on a grid of 10x10 numbers. The design means that this is easy for the user to clearly see how numbers follow each other and base on personal experience many games can be played to enhance the learning experience for the user. An additional feature is that all numbers are shown in a written form. As with multiplication square this poster is hugely successful having sold well over a hundred thousand since publication began.