Wow, It is Monday. I decide to make Mondays Math Monday!
I miss Math, let’s discover the magic in number nine (9).
As you do “Times Table By 9” , you may notice that the digits always add up to “9”…
Let’s check it out:
1*9=9 –>0+9=9
2*9=18 –>1+8=9
3*9=27 –>2+7=9
4*9=36 –>3+6=9
5*9=45 –>4+5=9
6*9=54 –>5+4=9
7*9=63 –>6+3=9
8*9=72 –>7+2=9
9*9=81 –>8+1=9
10*9=90 –>9+0=9
Isn’t this number game FUN?
Does it work for larger numbers? You may wonder.
Yes, this works for any number multiples 9….
Say: 11*9=99 –>9+9=18 –>1+8=9
100*9=900 –>9+0+0=9
211*9=1899 –>1+8+9+9=27 –>2+7=9
1005*9=9045 –>9+0+4+5=18 –>1=8=9
…
42001*9=378,009 –>3+7+8+0+0+9=27 –>2+7=9
Amazing math facts! :). I hope that YOU have FUN learning and discovering the magical number nine (9) on Math Monday.
If interested, please do an example to confirm this fact above:
___ *9=_____, –>___+___=____,
Thank YOU for sharing the wisdom of magical numbers in nine (9). Happy Math Monday to YOU All! 🙂 🙂
Happy Martin Luther King’s Day to You all Who Celebrate This Special Day!
Math Blogs:
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/2009/12/08/problem-of-the-fortnight-2/
Problem of the Fortnight: http://eaglebach.wordpress.com/2009/10/26/problem-of-the-fortnight/
Main page: http://eaglebach.wordpress.com/
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/
Jingle’s Math Posts:
Jingle: https://jingleyanqiu.wordpress.com/2009/12/04/i-love-math-how-about-you/
Jingle: https://jingleyanqiu.wordpress.com/2009/12/07/crack-a-window/
Jingle: https://jingleyanqiu.wordpress.com/2010/01/03/see-how-math-is-employed-in-words-with-its-worth/
Jingle: https://jingleyanqiu.wordpress.com/2010/01/07/complex-numbers/
Jingle: https://jingleyanqiu.wordpress.com/2010/01/09/solve-a-math-problem/
Jingle: https://jingleyanqiu.wordpress.com/2009/12/27/sunday-160-words-challenge/
Jingle: https://jingleyanqiu.wordpress.com/2009/12/24/count-from-10-to-1-double-your-holiday-fun/#comments
Jingle: https://jingleyanqiu.wordpress.com/2009/12/17/have-you-ever-heard-of-baseball-math/
Jingle: https://jingleyanqiu.wordpress.com/2009/12/11/math-positive-thinking-rage-aholic-and-more/
Jingle: https://jingleyanqiu.wordpress.com/2009/12/09/math-hope-drunk-driving-and-more/
Jingle: https://jingleyanqiu.wordpress.com/2010/01/11/count-from-1-to-10-twenty-different-ways-1-5/
Jingle: https://jingleyanqiu.wordpress.com/2010/01/18/magical-numer-nine-9-on-math-monday/
Jingle Nozelar 