Encyclopedia > Subtraction

  Article Content

Subtraction

Subtraction is one of the four arithmetic operations. It is related to addition as follows: if a+b=c, then c-b=a and c-a=b. Subtraction can also be envisaged as the opposite of addition: if b is added to a to obtain c, then subtract b from c to get back to a.

Subtraction is a natural way to introduce the idea of negative numbers: while it is hard to conceive of having less than no apples, negative numbers arise when someone thinks about subtracting a larger number from a smaller, and they can be shown on a number line[?].

One way to subtract numbers is to use complements.

The traditional names for the terms of the subtraction

 c = a - b 
are difference (c), minuend (a) and subtrahend (b).



All Wikipedia text is available under the terms of the GNU Free Documentation License

 
  Search Encyclopedia

Search over one million articles, find something about almost anything!
 
 
  
  Featured Article
Charles V, Holy Roman Emperor

... his various positions, giving his personal empire to his son, Philip II of Spain, and the Holy Roman Empire to his brother, Ferdinand. Charles retired to the monastery of ...

 
 
 
This page was created in 58.2 ms