







Vinculum 
20170127 

From Dick: What is the line or bar over a Roman Numeral called?
Eg. V with the bar over it representing 5,000 . Answered by Penny Nom. 





The writing of numerals 
20070223 

From Abbas: What is the reason to write the integral such that one as 1 two as 2 similarly three as 3 and vice versa Answered by Penny Nom. 





How can half of 12 be 7? 
20061116 

From Liz: How can half of 12 be 7? Answered by Steve La Rocque, Chris Fisher and Penny Nom. 





Half of five 
20041226 

From Pauline: Why is four half of Five? Hint: It's the middle half? Answered by Penny Nom. 





A bar over a Roman numeral 
20000621 

From Charles Fontaine: Is there any significance to the bar placed over some Roman numerals? Answered by Penny Nom. 





Roman Numerals 
19990913 

From April: Write MCDXCVII in arabic numbers Answered by Penny Nom. 





Roman Numerals 
19990429 

From Michelle Jenkinson: Someone proposed this question to me and I do not know the answer, so I was wondering if you could help. How, using Roman Numeral, did people add, subtract, multiply, and divide with no zero or negative numbers? Answered by Penny Nom. 





Number Systems 
19981007 

From Frans: What other number system are there besides the real number system and the complex number system? Interested adult thanks Answered by Penny Nom. 





Roman Numerals 
19980205 

From Dawn Hilgenberg: How would I read a Roman Numeral such as LXII? Does the L in front make the X equal a lesser amount? We have been discussing how to read these and I can find no information about how to read an extended Roman Numeral problem. Help!! Answered by Harley Weston. 





Roman Numerals 
19971031 

From Mark Curts: I am looking for some resources for teaching Roman Numerals. I would like to expand upon the basic concepts, by locating some addition, subtraction, multiplication or division problems written with Roman Numerals.  Mark Curts Answered by Chris Fisher. 

