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Finger Multiplication Tricks
Here is a simple way to multiply by
nine using your fingers.
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Hold both your hands up with
palms facing you. Number the fingers from left to right as
one to ten. |
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Now hold down the finger of
the number you want to multiply by nine. In this example, we
are going to multiply by eight, so the eighth finger is held
down. |
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The fingers to the left as
the tens and the fingers to the right are units. In this
example, there are seven fingers to the left (marked blue)
and two to the right (marked red) which makes 72. |
Here's
the
9 trick again but from another site with different visuals.
Here is a way to multiply by six,
seven, eight or nine using your fingers. It doesn't cover
multiplying by one to five only 6x6 to 9x9. It is not as simple as
the previous method, and to tell the truth, it might just be easier
learning your
times
tables, but it does work. It is said to be widely used in
medieval Europe
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Hold your hands with palms
facing you and fingers towards each other. Number the
fingers on each hand from bottom to top as six to nine. (The
thumb could be ten, but it's easy to multiply by ten, so
don't bother!) |
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Now touch the two fingers of
the numbers that you want to multiply. You may need to twist
your hand slightly to do this. This example is multiplying
eight by seven, so the finger number 8 touches the finger
number 7 on the other hand. |
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Now for the calculation.
First you add the fingers below and including the touching
ones. These are the tens. Here there are five of them, three
on one hand and two on the other (marked blue), so that
makes 5x10 = 50. |
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Then you multiply the
fingers on the left hand above the touching ones with the
fingers on the right hand above the touching ones. These are
the units. Here there are two fingers on the left (marked
red), and three fingers on the right (marked green), so that
makes 2x3 = 6. Add this to the 50 you've already got, and
that makes 56. |
toadhaven.com |
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