Give your child an important head start on school and their education with this subtraction jigsaw puzzle this puzzle has all of the possible problems and answers of the numbers 1 9 a visual aid that will help your child discover the wonders of the world of mathematics it will also be a load of family fun to assemble and once youre done you can tear it apart and start over or have it framed and mounted in your childs room for them to study this puzzle also comes in a tray which may be used