Finger Multiplication
Hold your hands up in front of you, palms forward
.
Your thumbs are each a
"6",
Your pointer fingers are each a
"7"
Middle fingers are each an
"8"
Ring fingers are each a
"9"
Pinky fingers are each a
"10"
Okay - now hands are in
front of you, palms forward, fingers
upward.
Let's multiply
7X8:
Put the pointer finger of left
hand (7) touching the middle finger of right hand
(8).
Now
count the two fingers that are touching plus one finger below that on the left
and two fingers below that on the
right.
Countiing the two touching
fingers and the ones below them you have five "lower"
fingers.
On the top, above the touching
fingers, you have 3 on the left and 2 on the
right.
So - to multiply 7X8 you have
your 7 finger and your 8 finger touching and then you add up all the lower
fingers (counting the touching ones) and that is 5. (That is how many "tens" the
answer will have.)
Then you multiply
the top ones and that is 2X3 is 6.
To
multiply 7X7 you touch your 7 fingers together and you
get:
4 under and 3x3 on top -
49
yep
cool
I
fooled with trying to write equations for how it works - never manged to do
it.
if you put the two thumbs together - that
is 6X6....
but you only have two lower
fingers - so that's only 20.
only a "2" I
mean.
but when you mulitply the top fingers
it is 4X4 which is
16.
gmta
so
you add the 16 to the 20 that you get from the 2
thumbs.
that makes
36
so - the lower fingers are really
"tens"
and the upper fingers are
"ones"
Posted: Wed - January 21, 2004 at 12:31 AM