Multiplication table by 6, 7, 8 and 9 on the fingers

2024 Author: Malcolm Clapton | [email protected]. Last modified: 2023-12-17 03:44

If my memory serves me correctly, the multiplication table up to and including 5 was easy enough. But with multiplication by 6, 7, 8 and 9, certain difficulties arose. If I knew such a trick before, homework would be completed at least twice as fast;)

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Multiplication by 6, 7 and 8

Turn your hands with your palms facing you and assign numbers 6 to 10 to each finger, starting with the little finger.

Now let's try to multiply, for example, 7x8. To do this, connect finger # 7 on your left hand with finger # 8 on your right.

And now we count the fingers: the number of fingers under the connected ones is tens.

(the picture is clickable)

And the fingers of the left hand, remaining on top, are multiplied by the fingers of the right - these will be our units (3x2 = 6). The total is 56.

Sometimes it happens that when multiplying "units" the result is more than 9. In such cases, you need to add both results in a column.

For example, 7x6. In this case, it turns out that the "units" are equal to 12 (3x4). The tens are equal to 3.

3 (tens)

+

12 (units)

_

42

Multiplication by 9

Turn your hands again with your palms facing you, but now the numbering of your fingers will go in order from left to right, that is, from 1 to 10.

Now we multiply, for example, 2x9. Anything that goes up to finger number 2 is tens (that is, 1 in this case). And everything that remains after finger number 2 is one (that is, 8). As a result, we get 18.