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Title: The best way to make multiplication simple
Description: In this note you will find a Japaness way can help you or your children to multiple 2 numbers without calculator and when i said 2 numbers i mean like 45x98, 107x47,or something like this
Description: In this note you will find a Japaness way can help you or your children to multiple 2 numbers without calculator and when i said 2 numbers i mean like 45x98, 107x47,or something like this
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Here is an interesting method to visualize multiplication that reduces it to simple counting!
Draw sets of parallel lines representing each digit of the first number to be multiplied (the
multiplicand, see figs
...
Draw sets of parallels, perpendicular to the first sets of parallels, corresponding to each digit
of the second number (the multiplier)
...
On the left corner, put a curved line through the wide spot with no points
...
Count the points in the right corner
...
Count the ones in the left corner
...
2)
...
Write all those numbers down in that order and you will have your answer (see products in
figs
...
This visual method is very valuable to teach the basis of multiplication to children
...
The Math Behind the Fact: The Distributivity of Multiplication
The method works because the number of parallel lines are like decimal placeholders and
the number of dots at each intersection is a product of the number of lines
...
Thus in the
example shown in fig
...
The method can be generalized to
products of 3-digit numbers (or even more) using more sets of parallel lines
...
Title: The best way to make multiplication simple
Description: In this note you will find a Japaness way can help you or your children to multiple 2 numbers without calculator and when i said 2 numbers i mean like 45x98, 107x47,or something like this
Description: In this note you will find a Japaness way can help you or your children to multiple 2 numbers without calculator and when i said 2 numbers i mean like 45x98, 107x47,or something like this