There are four different sets of pages in this ebook
20 pages with 3 addition problems per page 20 pages with 5 addition problems per page 20 pages with 5 subtraction problems (from 7) per page 20 pages with 5 subtraction problems (from 10) per page Number tiles can be placed in a tray, or a shoebox lid, for easy access by young fingers . . .

Click on example page to enlarge
There are 80 printable work pages in this ebook. These pages are designed to be printed out on cardstock, and used over and over again.
Preschool Math: Number TilesPDF ebook with 94 pages total; there are 80 printable work pages for addition and subtraction (using zero to 10)
Young children can do independent work, once they know how to use the number tiles work pages; one page per day is recommended for 3 and 4 yearold children.
After doing their work pages, children can leave the tiles in place so Mom can check their computing . . . they love to have Mom say they did the problems ALL right! (Though if they use manipulatives while working the problems, they already know they are right.) Instructions are provided for making this 10bead abacus  from a wire hanger and large beads. (Using actual objects to count with is highly recommended for preschool children other manipulatives could be used instead of an abacus, if desired, such as teddy bear counters, buttons, misc. other items) 