In this video, I talk about a really easy and fast method to learn the 11 to 20 multiplication tables. This is a very neat trick so make sure to subscribe for more interesting tricks and videos! Note: To multiply by 20, change the first step so that instead of multiplying by 10, you multiply by 20. Another method of doing this is to change the first step so that you double the number first, and then you multiply by 10. Homework answers: 15 x 6 = 90 11 x 8 = 88 18 x 7 = 126 19 x 9 = 171 Learn tables from 2 to 9 :