Using these math flash cards is easy. Just pick a deck, flip through the cards, and test your math skills by answering the equations on the front and checking the answers on the back. For the best results, you can time yourself to improve your speed. When it comes to storage, always use the protective case that comes with each deck to keep the cards safe from damage. If the cards get dirty, you can gently wipe them with a soft, dry cloth. Keep the cards away from moisture and direct sunlight to prevent warping. Remember, these cards are designed for kids aged 6 and up, so use them according to the appropriate age group.