heres a little math trick for you ;) 11 is the easiest number to multiply by and heres why. lets say you have 73 * 11 it may seem hard but here is a little trick. take the first number so 7 then add 7 + 3 which is 10 so add a 1 to the 7 and continue with 0 so 80 so far then you add the last digit of the number which is 3 so you get 803. If that does not convince you then here 25 times 11 so start with the 2 then 2 + 5 = 7 so 27 and add 5 to the end you get 275. hopes this help with anyone in school or just to boast. if you want more cool math tricks just reply :D ( i might do a math magic trick tomorrow if people like this)
11 trick
- Thread starter Snoop.
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I found that by myself when I was in 6th grade... Here's how I did it:
First, I duplicated it: 7 3 7 3 . Then add the middle numbers. 7 1 0 3. Obviously, this answer is long (Should be 3 digits and the limit is 90), so I add the first 2 digits. 8 0 3
but is was complicated and answers were not always exact for larger numbers.
2nd example: 2 7 2 7, add the 2 middle ones: 2 9 7
Another trick is: Supposed you have to do 5698*11. Then here's what to do: 56980+5698 = 62628. (add a 0 and add the first number to the new one.
a girl in 8th grade showed me this trick.
First, I duplicated it: 7 3 7 3 . Then add the middle numbers. 7 1 0 3. Obviously, this answer is long (Should be 3 digits and the limit is 90), so I add the first 2 digits. 8 0 3
but is was complicated and answers were not always exact for larger numbers.
2nd example: 2 7 2 7, add the 2 middle ones: 2 9 7
Another trick is: Supposed you have to do 5698*11. Then here's what to do: 56980+5698 = 62628. (add a 0 and add the first number to the new one.
a girl in 8th grade showed me this trick.
Stupid math teacher?
no u
Don't ever call a teacher stupid if you have never reached his/her level.
Bring a Degree in Arithmetic/Mathematics or Engineering then you can call them stupid.
Learn to respect a teacher, even if you hate them or otherwise the consequences will be painful.
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