Some people seem to have real difficulty learning their multiplication facts.
For an enjoyable twist, see also Russian Peasant Multiplication. There are many ways to help us remember such things, but what works best will be different for different people. For example, you can try to remember something by saying it repeatedly, writing it, acting it out, representing or drawing it, making up a game or story or song about it, and so on. Usually, the more ways you use to connect it to your brain, the easier it is to remember it. Here's how this might work with multiplication facts.