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Multicultural Multiplication.
Here are three worksheets that come under the banner multicultural education.
When long multiplication is eventually attempted at Level 5 it is always a
pleasant diversion to look at alternative methods, some easy, others more
difficult. The easiest to follow and understand is Egyptian Multiplication. The
mechanics of it are simple to follow. All we are creating is a series of
multiplication tables down the page by doubling. If we are calculating 24 x 33,
as in the first example, then rather than setting it out as shown on the left,
we write
1 33 1 lot of 33 is 33
2 66 2 lots of 33 are 66
4 132 4 lots of 33 are 132 etc.
It then becomes very clear as to where the numbers are derived from, rather
than just a rote doubling method. To get 3 lots of 33, we need a “1 lot” and a
“2 lot”. This is a fairly simple methodology for everyone to follow, even on a
Friday afternoon!
In Maths in Schools Nov 2000 David Pagni showed us how Russian Multiplication
was centred on base 2 calculations. The Russian Multiplication sheet
demonstrates how to carry out calculations using Russian multiplication as an
alternative to long multiplication. Unfortunately the complexities of why it
works are a little difficult for classroom consumption at this level.
This leads us on to Chinese Multiplication, now why does that work then…???
Ian Fisher
This article is about 10ticks worksheets Level 5 Pack 1 Page 13, Level 5 Pack 1
Page 14 and Level 5 Pack 4 Page 21.
Maths in Schools. January 2004. Vol 33 No 1.
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