This is a very easy way to multiply by 9. Simply use your two hands, palm facing downwards… The little finger on your left hand is now number 1, while the thumb on your left hand is 5 (the other finger’s are numbered 2-4). The right hand thumb is number 6, while the right hand pinkie finger is number 10 (the other finger’s are numbered 7-9). After watching this video you will always remember how to quickly calculate and multiply by 9 
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