I purchased these for my students. However, I didn't pay attention to the size specs. They are so small! They look more like a toy than a tool. They are not the standard size flashcard nor are they the same size as playing cards. They are maybe 1/2 the size. Also, my students informed me not all the facts for each number are in the deck. So they ended up making their own additional cards to learn, say the 4 times table. I was very disappointed especially because of the price I paid. In addition, I wanted to go to the store and check them out first, but they are only available online. I would not recommend these, but I bought them because I had checked at dollar stores for decks of flashcards for my math students and couldn't find them. Ugh!