Equal AdditionsDate: 11/01/97 at 19:07:59 From: Karl Gabzdyl Subject: Equal Additions Dear Dr. Math, Could you please provide me information on the "Equal Additions" method for subtraction? A trip to the library produced many interesting facts but did not tell us what this algorithms is. Can you help? The parent of a gifted 4th grader. Karl A Gabzdyl Date: 11/05/97 at 14:59:04 From: Doctor Terrel Subject: Re: Equal Additions Equal additions for subtracting goes like this: 67 + 1 = 68 - 49 + 1 = 50 ----- --- 18 You see, we converted a hard case involving "borrowing", into a case that had easier numbers. While the principle is easy and straightforward, to put it into practice may take some "practice". :) -Doctor Terrel, The Math Forum Check out our web site! http://mathforum.org/dr.math/ |
Search the Dr. Math Library: |
[Privacy Policy] [Terms of Use]
Ask Dr. Math^{TM}
© 1994-2013 The Math Forum
http://mathforum.org/dr.math/