Helping With Math

I can teach someone how to do Math. A few days ago I helped my very good friend to do 4-times math problems by teaching her that if you want to do 4×8, you can do 4×4 and double the answer. And also, for 6-times you can double whatever number and then add one more of that number. For example, 6×3: You can take the answer from 6×2 and 6×1 and add them together and you’ll get your answer.