Multiples of 9 Using Finger Trick

Some find it hard to memorize the multiplication table. For multiples of 9, learn this finger trick and you will find that multiplying 9 with any number will be quick and easy.

This trick is done by spreading your fingers as shown in the image, then fold the corresponding finger for the multiplier of 9. Left side of the folded finger will be the tens digit while right side of the folded finger will be the ones digit.

1 x 9 = ?
Folding 1st finger, no finger remains on left side, while 9 fingers remain on the right side. That makes 0 and 9, so 1 x 9 = 9. The answer is obviously 9, this is just for the sake of example.

2 x 9 = ?
Folding 2nd finger, 1 finger remains on left side, while 8 fingers on right side. So 2 x 9 = 18.

3 x 9 = ?
Folding 3rd finger, 2 fingers remain on left side, while 7 fingers on right side. So 3 x 9 = 27.

4 x 9 = ?
Folding 4th finger, 3 fingers remain on left side, while 6 fingers on right side. So 4 x 9 = 36.

5 x 9 = ?
Folding 5th finger, 4 fingers remain on left side, while 5 fingers on right side. So 5 x 9 = 45.

6 x 9 = ?
Folding 6th finger, 5 fingers remain on left side, while 4 fingers on right side. So 6 x 9 = 54.

7 x 9 = ?
Folding 7th finger, 6 fingers remain on left side, while 3 fingers on right side. So 7 x 9 = 63.

8 x 9 = ?
Folding 8th finger, 7 fingers remain on left side, while 2 fingers on right side. So 8 x 9 = 72.

9 x 9 = ?
Folding 9th finger, 8 fingers remain on left side, while 1 finger on right side. So 9 x 9 = 81.

10 x 9 = ?
Folding 10th finger, 9 fingers remain on left side, while no finger on right side. So 10 x 9 = 90.
It's obviously 90. I just show here that this trick is applicable from 1 to 10.

Quick and easy, right?

#Matamata