These are great flash cards to use in kindergarten. Included are pdf files for flashcards +0, +1, +2, +3, +4, and +5! When you duplex the files on the long edge the answer will print on the back! My students love to use these to practice before we take our 2 minute timed test. I've color coded each fact test so they know which level they are working on. They LOVE timed tests!