20 FLASH CARDS WITH ANSWERS ON BACK
Print out the file double-sided. Students (or teachers) can cut out the flash card rectangles for personal use. They fit easily into a plastic bag or an envelope.
They are in two formats: 1 + 1 = __ AND 2 = 1 + __ .
Answers on the back of the flash cards are smaller and a shade lighter than the front of the flash cards.