Many math sites teach the following method of using your fingers to remember the multiples of nine: to find the product of 9 times *n*, hold your hands out in front of you and fold down your *n*^{th} finger from the left to separate the tens and the ones. For example, to find 9×4, you would hold down your 4^{th} finger from the left as in the above photograph. The bent finger separates the tens and ones digits, so the configuration of 3 fingers (folded finger) 6 fingers gives the answer of 36.

While this method has enjoyed great popularity among students and teachers, there are two other lesser-known finger tricks for multiplying numbers. Click here to find out what they are!