Trick of the Day - Squaring numbers between 41 and 59
2 posters
Page 1 of 1
Trick of the Day - Squaring numbers between 41 and 59
by Ani Wed Mar 11, 2009 8:58 pm
Okay, this question pops up every so often...
46^2!!
you could just foil or do this...
ex.1 46^2
1. subtract the number from 25, write down the answer(21)
2. next, subtract the number from 50(4) and square the answer(16), an the write the answer(16) after the above(21) to get 2116: your answer.
46^2 = 2116
I'm busy right now, find yer own practice!!!
46^2!!
you could just foil or do this...
ex.1 46^2
1. subtract the number from 25, write down the answer(21)
2. next, subtract the number from 50(4) and square the answer(16), an the write the answer(16) after the above(21) to get 2116: your answer.
46^2 = 2116
I'm busy right now, find yer own practice!!!
Ani- Vice-President
-
Number of posts : 236
Age : 32
Location : Kanto
Registration date : 2008-05-02
Re: Trick of the Day - Squaring numbers between 41 and 59
by Alex Tatge Fri Mar 13, 2009 10:01 am
This should go under things to memorize... all squares less than 110 are easy.
Alex Tatge- Webmaster
- Number of posts : 58
Location : In yore base, killing yore d00ds.
Registration date : 2008-09-22 -
Similar topics» Trick of the Day - Multiplication by 25, 50, 75, 125
» Trick of the Day - Sum of Fibonacci
» Trick of the Day - Arithmetic Mean
» Trick of the Day - Things to memorize
» Trick of the Day - Sum of squares in a Fibonacci Sequence
» Trick of the Day - Sum of Fibonacci
» Trick of the Day - Arithmetic Mean
» Trick of the Day - Things to memorize
» Trick of the Day - Sum of squares in a Fibonacci Sequence
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum