Ms. Armstrong gave us a task today to search a few math tricks to blog here in our most beloved site. For now, I'm going to tell yo some math bogus that I searched, well.... for a bit fun and memory refreshment...:-)
1.) Pick any number
2.) Add 5
3.) Double your resulting number
4.) Subtract 4 from your answer
5.) Divide the outcome by 2
6.) Then subtract the number you started with
Is the result 3?
And her's another one...
1.) Pick any number.
2.) Add the next number to it (e.g. if it's 9, add 10)
3.) Add 5
4.)divide the result by 2
5.) Subtract the original number
Is it 5?
I have put some wewbsites that has a hand ful of math tricks and rules..
http://www.angelfire.com/in/marmtek/MathTricks.html, http://www.4to40.com/activities/mathemagic/index.asp?article=activities_mathemagic_numbertricks1, http://math.about.com/bltricks.htm?PM=ss13_math, and http://www.slideshare.net/simonesu/amazing-math-trick/. the last one has a slide on it for more of these math tricks. I hope you'll have fun!!!:-)
