Believe it or not, one of my 8th graders showed me this trick and it blew my mind!
Some of you may be thinking, this isn't a useful resource because it doesn't help the student understand the concept of multiplying by 9 and that's understandable. However, I've taught 4th and 5th grade special education and little tricks like these are a lifesaver and confidence booster when students encounter multiplication problems.
I really hope you find this helpful too.
Multiplying by 9: A Tip You Won't Forget by The Teacher Treasury is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Based on a work at http://www.theteachertreasury.com/free-downloads/a-helpful-tip-to-remember-the-next-time-you-multiply-by-9-mini-poster.