Square NumbersDate: 07/27/99 at 04:10:20 From: Lisa-Jayne Smith Subject: Square Numbers We have been doing square numbers for a while in my class and I just do not understand the concept. At home no one is very good at maths, so I thought I would ask you. Thank you. Date: 07/27/99 at 12:31:47 From: Doctor Rob Subject: Re: Square Numbers Thanks for writing to Ask Dr. Math. Square numbers are the number of objects in a square arrangement: 1-by-1 square: O - 1 object, 2-by-2 square: O O O O - 4 objects, 3-by-3 square: O O O O O O O O O - 9 objects, 4-by-4 square: O O O O O O O O O O O O O O O O - 16 objects. These numbers are found on the diagonal of the multiplication table: | 1 2 3 4 5 ... ---------------------- 1 | 1 . . . . . 2 | . 4 . . . . 3 | . . 9 . . . 4 | . . . 16 . . 5 | . . . . 25 . ...| . . . . . ... You can compute them by multiplying a number by itself: 1*1 = 1, 2*2 = 4, 3*3 = 9, 4*4 = 16, 5*5 = 25, ... - Doctor Rob, The Math Forum http://mathforum.org/dr.math/ |
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