Explain how 9x4 can help you find 9x8
Since 8 is half of 4, you can get the answer of 9×4 which is 36 and add it to itself which is 36+36 which gives you 72. Which is the same as 9×8.
You can do 9x4 which equals 36, and then multiply it again by 2, giving you the answer of 72, which is 9x8
