1. Spend some time reviewing your addition and subtraction facts. 2. Next, try to answer the addition and subtraction questions on both slides. 3. Use the to fill in the answers or use the to record your answers. Your goal is to answer 20 addition questions in under 2 minutes, then try to answer 16 subtraction questions in under 2 minutes. 4. Once you are finished, check your answers and review any questions answered incorrectly. 5. Press to send your work to your teacher.