Write addition facts on flash cards for memorization purposes. Write the question on one side, for example, "2 + 2." On the other side write the answer, in this example it would be "4." Read through the flash cards a few times per day and try to answer the question without looking at the answer. Use the answer on the back to make sure that you are correct.
Use games, worksheets and online exercises to practice basic addition facts. There are many addition board games, worksheets and exercises that can be printed out from the Internet or purchased at book stores. You can also go to the library to check out materials and games about addition if you do not want to purchase them.
Take practice tests to gain ability and quickness when answering addition fact questions. You can create these tests yourself by placing various addition fact questions on a sheet of paper. Repeat problems more than once on a test to help with repetition and memorization. Try to go through the problems and answer them as quickly as you can. This will help prepare you for timed addition tests.
Take timed tests to further your recall. Timed tests add a bit of pressure, which can raise adrenaline levels and push you to succeed in answering questions quickly. Do not become frustrated if you do not finish the test in time; continue trying until you are able to do so.