







Addition and subtraction base 5 
20170129 

BABAWALE pose la question : Simplify 342five +132five223five Penny Nom lui répond. 





4444 base five 
20161111 

John pose la question : If 4444 is a number in Base5, is 624 its value? Penny Nom lui répond. 





Division base 5 
20160201 

Jenalee pose la question : I am having problems with a dividing bases question. I reviewed two that I could find in the database and tried the question as shown but I am still getting the wrong answer.
My question is 32\24043 to the base of 5 for both. Penny Nom lui répond. 





Subtraction base 5 
20150829 

nakita pose la question : can u explain the quinary subtraction ...
(3000) (2342) all the numbers are in quinary number system Penny Nom lui répond. 





Integers in different bases 
20150305 

Michael pose la question : Let k be a positive integer so that 28 (subscript)k = 132 (subscript)5 Penny Nom lui répond. 





Multiplication in base five 
20140807 

Alise pose la question : Hi Maths Central!
I was wondering if you could help me with multiplying in base 5. I have read a question previously answered by you in regards to this but got fairly confused by it and was hoping you could help me with my question.
My question is: Multiply 1422 base 5 by 21 base 5 keeping these numbers and answer in base 5.
Would you also be able to explain how to get to the answer?
Thanks! Penny Nom lui répond. 





Converting to base 5 
20140410 

Usama pose la question : Convert the numbers used in the following expressions into those of basefive and solve :
21+34108+62
Convert the result so obtained into decimal system and thus check your answer? Penny Nom lui répond. 





Counting in base five using words not digits 
20140125 

Randy pose la question : We all know how to count (in the base 10/decimal system) using words not numbers. For example: one, two, three, four, five, six, seven, eight, etc. However, in base 5 (for example) how would you count (in words). For sure  in base 5 the number 1 could be "one", the number 2 could be "two". However there seems to be no words to describe base 5 numbers beyond 0,1,2,3 and 4 (and perhaps 10). In base 5 the number 10 is not ten. Rather it is "five". In base 5 what word(s) describe numbers larger than 10? What words are used for 11, 12, 13, 14, 20, 21, 22, 23, 24, 30, 44,...etc. Also, consider a man and woman were married in the Gregorian year 1964. If they had an anniversary tomorrow  how long would you say they've been married in base 5 speak? In numbers their Golden Anniversary would note 200 years of marriage in base 5. How would you articulate their years together in base 5? I don't recall seeing verbiage to represent numbers in any system other than the decimal/base 10 system. Do such things exist for other systems? Harley Weston lui répond. 





Base 5 arithmetic 
20131127 

samuel pose la question : Good day sir, please i don't understand when you say 4x4=13 in base five? In fact, am always having difficulties in addition, subtraction, division and multiplication of number in the same base other than base ten. Please can you give me one example each with details explainations? Penny Nom lui répond. 





Base 5 arithmetic 
20131012 

Obassy pose la question : (4 2 4 3)(1 3 x 4)=( Y 3 4 4),find the value of x and y in the subtraction above carried in base five? Penny Nom lui répond. 





Base 5 
20130930 

Zakir pose la question : Sir I wanna know something about base 5 number system
Why we use it and who use this ? and what is the purpose of it Robert Dawson lui répond. 





Converting base 3 to 5 
20110228 

Harry pose la question : Hey Math Central, I came across your website and im in need of help on my maths c assignment. I have to convert base 3 to 5 without converting back to ten. I heard that you can use patterns in 3 and 5 to make an equation but im not sure how to and i also heard you can use logarithms but i dont know how to use those so im kinda stumped. Robert Dawson lui répond. 





Divisibility by 3 
20100523 

Cathleen pose la question : To math central. I have to do a maths extension question that I don't understand. At first I thought I did.
It is about the dividing by three. In one part of the question, it asks me to show that the rule of division by three does not work for 23142 with a little 5 down the bottom.
What doe base 5 mean? We first thought that the little 5 down the bottom meant multiplying y the power of five.
Can you please tell me what it means so I can finish this question? Penny Nom lui répond. 





Subtraction base 5 
20090809 

Nikki pose la question : can you help me how to do subtraction in base 5 notation. example is 3434  51?
how do you do this in base 5?
can you please explain how you do this & the answer as i have no idea.
Thank you kindly
Nikki Harley Weston lui répond. 





Base 5 arithmetic 
20080306 

Jana pose la question : Hello, my name is Jana, i have asked a question here previously about how to count in base5. I am happy now because i can convert any number now and it is very easy for me. The only thing i am having trouble with is understanding how to do a maths sum or times base5 numbers. it is just a bit hard for me. So do you think you could explain how to do a sum in base5 and how to do a multiplication sum. Please help...Thankyou Jana!! Harley Weston lui répond. 





Counting in base 5 
20080224 

Jana pose la question : my name is Jana, i really need help with a maths question at school. Im confused about how to count up from120 in a base5 format! I'm in year 5 and i really don't get all the complicated stuff. Stephen La Rocque lui répond. 





Base 10 to base 5 
20071009 

Angela pose la question : I've been searching online for the past week and I cannot find an Algorithm to convert from base 10 to base 5. Can anyone give me a stepbystep instruction on how to do this? Stephen La Rocque lui répond. 





Base 5 
20061211 

Shelley pose la question : how do you convert decimal numbers to a given base for example 2,875 to base five? Stephen La Rocque lui répond. 





Arithmetic in bases other than 10 
20031022 

Kim pose la question : how do you add, subtract, multiply and devide in base 3, base 5, etc? Penny Nom lui répond. 





Converting from base 10 to base 5 
20030910 

Susy pose la question :
My son, who is 9 in grade 5 has been asked to convert base 10 numerals into base 5. His first question of: 24(10) he has calculated to be 4x5 + 4x1 = 44 (5) The next question however is the tricky one.Ý We know the answer is supposed to be 100 but we find it difficult to get this in the way he understands it. 25 (10) = _________________ 100 (5) Can you help us figure out how we reach the answer. Claude Tardif and Penny Nom lui répond. 





Arithmetic in base 5 
20000920 

Lesley Emerson pose la question : my daughter is 9 and has been aske to solve the following in base 5 3+2 4+10 . . . Penny Nom lui répond. 

