The principal purpose of these blackline masters is to offer different and imaginative approaches to number work, so ideal for upper primary and lower secondary school. Whether through number trails, coded messages, crossnumber puzzles, travel charts or operation trails there are calculations to do and discoveries to make. In addition there are some good ideas for work on compass directions, isometric drawing and dividing shapes into halves and quarters. Full answers are given and this collection is a handy and well worked out resource.