kitchen table math, the sequel: A little math distraction

Sunday, October 21, 2007

Click here and scroll down for some mathematical humor.

Anonymous said...: Another distraction - It's even more beautiful centered.

The Beauty of Math!

1 x 8 + 1 = 9
12 x 8 + 2 = 98
123 x 8 + 3 = 987
1234 x 8 + 4 = 9876
12345 x 8 + 5 = 98765
123456 x 8 + 6 = 987654
1234567 x 8 + 7 = 9876543
12345678 x 8 + 8 = 98765432
123456789 x 8 + 9 = 987654321

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

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

Brilliant, isn't it?

And look at this symmetry.

1 x 1 = 1
11 x 11 = 121
111 x 111 = 12321
1111 x 1111 = 1234321
11111 x 11111 = 123454321
111111 x 111111 = 12345654321
11111 11 x 1111111 = 1234567654321
11111111 x 11111111 = 123456787654321
111111111 x 111111111=12345678987654321; October 21, 2007 at 3:46 PM
concernedCTparent said...: I believe I may have seen that somewhere.; October 21, 2007 at 6:39 PM
concernedCTparent said...: I agree, centering gives a very nice effect.; October 21, 2007 at 6:40 PM
Anonymous said...: I've received it twice in emails recently and thought I would share. But like you, I know I have seen it before. I just don't remember where.; October 21, 2007 at 7:29 PM

kitchen table math, the sequel