Set contains 12 strips measuring 55 x 600mm each displaying 10 numbers, to give minus 9 to plus 109 in total. Strips can be placed in a long number line format or underneath each other to display a number grid. 1 to 99 are colour coded to illustrate those numbers that make 100 e.g. the 30s row and the 60s row are yellow, so 32 + 68 =100. Curriculum Note: identify and represent numbers using objects and pictorial representations including the number line and use of the language of equal to, more than, less than, fewer, most, least.