19 items are filed under this topic.
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Bases larger than ten |
2009-12-14 |
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From Nick:
For numbers in bases larger than ten, what are the digits by mathematicians' conventions?
I assume the first 10 are always 0-9. I know two computer science conventions (for hexadecimal (A-F case-insensitively) and for base 85 (case-sensitivity plus 23 other characters)) and as a school student I learned that base 12 uses either T and E (which confused me when I thought they stood for Eleven and Twelve) or A and B, the latter as capitals only. Clearly, these conventions are in conflict.
I saw your reply in http://mathcentral.uregina.ca/QQ/database/QQ.09.99/magin1.html as accessed a few minutes ago but hope that in the 10 years since then mathematicians have arrived at a convention. Have they?
Thank you.
--
Nick
Answered by Claude Tardif. |
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A base 7 number and a base 9 number |
2009-07-09 |
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From koteawarao:
Find a base 7 three-digit number which has its digits reversed when expressed in
base 9.
ans: (281) base 7 and (182) base 9
Answered by Harley Weston. |
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Multiplying in different bases |
2009-02-25 |
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From Susan:
11 base 2 X 22 base 3 + 33 base 4 = _________ base 5
Answered by Robert Dawson. |
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In what base is 3x3= 10? |
2009-02-14 |
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From David:
In what base is 3x3= 10, 3x3=11, 3x3 = 12? is there a fast way to see this or do I have to create multiplication tables until I find the right one?
Answered by Penny Nom. |
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Division in different bases |
2008-12-02 |
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From MICHELLE:
DIVIDE 538 BY 14 IN BASE 2, 3, 4 & 5
Answered by Penny. |
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How do you change bases? |
2008-06-17 |
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From Peter:
How do you change bases eg. 121 from base 3 to base 5?
Answered by Penny Nom. |
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Convert from base 6 to base 12 |
2008-03-02 |
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From Jade:
I am trying to convert 13405 base 6 to a base 12 number. I am not allowed to go into a base 10 number. How will can I base 12 without doing anything with base 10? Thank you kindly.
Answered by Stephen La Rocque and Penny Nom. |
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Multiplying numbers in bases other than 10 |
2008-01-08 |
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From Imaiya:
In class we've been learning about numbers with a base other than ten. For example, base 7, base 5,
and base 6. What's really stumping me is how to multiply these numbers, when they aren't a base of 10.
I've had it explained to me once, but don't seem to understand it. Here are the equations, and I've listed the first few numbers for that particular base.
Base 5: 0,1,2,3,4,10,11,12,13,14,20 etc... The Equation: 34 x 42
Base 9: 1,2,3,4,5,6,7,8,10,11,12,13,14, etc... The Equation: 56 x 78
If you could explain to me how to multiply numbers with any type of base, I'd really appreaciate it. Also
if you could show me how to do one of the questions that I listed, that would really help me =) Thanks so much,
and once again, thank you for your great site!
Answered by Stephen La Rocque. |
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Representing different bases |
2007-12-05 |
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From Sudhir:
What does a number subscripted to another one denote? (I know that a number superscripted to another denotes the power, but the subscript number is something I have never seen before.)
Answered by Stephen La Rocque. |
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Converting bases |
2007-10-24 |
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From Johanna:
Is there an easy way to convert from base to base. For example, base 5 to base 9 or base 2 to base 4 etc
Answered by Stephen La Rocque and Penny Nom. |
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In what base does 25+25=51? |
2007-04-03 |
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From Jenna:
In what base does 25+25=51?
Answered by Stephen La Rocque and Penny Nom. |
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A 3-digit number in base 7 has its digits reversed when expressed in base 9. |
2007-01-28 |
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From Ashley:
A 3-digit number in base 7 has its digits reversed when expressed in base 9. Find this number.
Answered by Penny Nom. |
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Arithmetic in bases other than 10 |
2003-10-22 |
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From Kim:
how do you add, subtract, multiply and devide in base 3, base 5, etc?
Answered by Penny Nom. |
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Numbers in base 5 |
2003-02-16 |
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From Lori:
I'm trying to help my 6th grader with converting numbers like 82 to base 5 and 182 to base 12. We saw your examples on 613, but still are confused.
Answered by Penny Nom. |
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A rectangular prism |
2003-01-09 |
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From Julie:
How many faces on a rectangular prism and how many bases? Can the base also be a face and can a face also be a base?
Answered by Diane Hanson. |
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Base 5 numbers |
2002-09-13 |
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From Vera:
? how do you change a base 10 number to base 5
Answered by Penny Nom. |
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Arithmetic in base 5 |
2000-09-20 |
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From Lesley Emerson:
my daughter is 9 and has been aske to solve the following in base 5 3+2
4+10
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Answered by Penny Nom. |
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Bases other than 10 |
1999-12-06 |
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From Garret Magin:
We are doing a lesson on numbers of other bases than 10. We are working with binary, octal, and Hexadecimal. I was wondering what is used to represent number of different bases other then 16? Does it just continue on with the alphabet and if so what happens when you get to Z. It would be a help if you could answer this because it is really bugging me. And none of the math teachers at my school could let me know.
Answered by Claude Tardif and Patrick Maidorn. |
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des conversions de bases différentes |
2003-01-04 |
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From Christian:
Je cherche désespérément la (les) règle(s) pour réussir des conversions de bases différentes : de base x vers base y.
Answered by Claude Tardif. |
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