Using a Calculator in Other Bases
Date: 05/16/2000 at 12:14:54 From: Gina Ames Subject: Base 2 division Dear Dr. Math, Can a calculator be used to add non-base 10 numbers? For example, 27 base 8 + 65 base 8. Thank you for your help, Gina Ames
Date: 05/18/2000 at 11:43:07 From: Doctor TWE Subject: Re: Base 2 division Some calculators are designed to do arithmetic in specific bases, usually binary (base-2), octal (base-8) and hexadecimal (base-16), because these bases are commonly used when working with computers. Look for buttons marked [BIN], [OCT] and [HEX] - this is an indicator that the calculator works in these bases. Calculators vary in what they can do in those bases, and what button(s) you need to push to get them to do operations in those bases. Generally, if a calculator can work in those bases, it can add and subtract in those bases, and convert values to and from decimal. Be careful with negative numbers and fractions - most calculators only deal with integer values in other bases, and represent negative values as "complements." Some can multiply and divide, but most of them will only give you the integer portion (the quotient) when dividing. For more information on complements, visit: Two's Complement http://mathforum.org/dr.math/problems/corbin.07.13.99.html Negative Numbers in Binary http://mathforum.org/dr.math/problems/akella.8.19.99.html One final note: You can always convert the numbers to decimal, do the necessary arithmetic (in decimal), then convert the answer back to the base desired. I hope this helps. If you have any more questions, write back. - Doctor TWE, The Math Forum http://mathforum.org/dr.math/
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