Hello, how are you?
There are amazing secrets or magic in mathematical numbers such as 1, 11, 111, …., 111111111, 8, and 9, etc. The following is one of those. Hope that math fans or those who are interested in math teaching and learning enjoy it.
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1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 987 65
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321
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0 x 9+1=1
1 x 9 + 2 = 11
12 x 9 + 3 = 111
123 x 9 + 4 = 1111
1234 x 9 + 5 = 11111
12345 x 9 + 6 = 111111
123456 x 9 + 7 = 1111111
1234567 x 9 + 8 = 11111111
12345678 x 9 + 9 = 111111111
123456789 x 9 +10= 1111111111
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9 x 9 + 7 = 88
98 x 9 + 6 = 888
987 x 9 + 5 = 8888
9876 x 9 + 4 = 88888
98765 x 9 + 3 = 888888
987654 x 9 + 2 = 8888888
9876543 x 9 + 1 = 88888888
98765432 x 9 + 0 = 888888888
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1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
1111111 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111 = 12345678987654321
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If YOU have a moment, please answer this simple question:
Take a piece of paper from your computer printer, 8.5*11 in size, you agree that there are four (4) corners for the paper which is rectangle shape, now take a scissor and cut one (1) corner off the paper by straight line (only once for each result), how many corners left on the remain paper?
Very easy if you actually do it!
Only a tiny trick in it, Good Luck!
Happy Saturday Evening! 😉 🙂 😉
PS: You can also fold it for one time to get a result, there are two solutions,
If you divide the rectangle into exactly two equal pieces of triangular paper, then you get 4-1=3, 3 corners,
But if you cut out one corner and get two pieces of paper, with a small triangle removed, you get 4-2=5 corners,amazing math humor, isn’t it?
Good job, everyone, everyone got 5 corners, the other case is a trick, as I mentioned…;) 🙂 😉
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Math Posts in Blogs:
Childish Sweetheart:
http://kumikomae.blogspot.com/2010/01/math-equations-humanity.html
Richard Wiseman Blog:
http://richardwiseman.wordpress.com/2010/01/15/its-the-friday-puzzle-42/
Math teacher: http://manlovesmath.blogspot.com/
Bananaz: http://bananazpeople.blogspot.com/
Teach :<) Happy: http://techhappy.wordpress.com/2010/01/01/46-stellar-math-sites-for-kids-youd-be-obtuse-not-to-visit/
Math Baseball: http://www.funbrain.com/funbrain/math/
Math faculty in California: http://eaglebach.wordpress.com/
Problem of the Fortnight: http://eaglebach.wordpress.com/2009/10/26/problem-of-the-fortnight/
Coffee cup adventures: http://yanangski.wordpress.com/2010/01/17/doing-the-math/#respond
That little Notebook’s Weblog : http://thatlittlenotebook.wordpress.com/2010/01/16/my-brothers-wisdom/
Math humor:
Jingle Nozelar 