Parenthesis
Pronunciation: /pəˈrɛn.θə.sɪs/ Explain
-- plural is parentheses
Parentheses are marks used to group
operations.^{[2]}
Parentheses are always used in pairs.
The left parenthesis looks like: (. The right
parenthesis looks like: ).
The parentheses are used to group operations in math. For example, the expression
5·4+2 evaluates to 22.
Using the order of operations,
we first multiply 5 and
4 to get 20, and then
add 2 to get 22.
However, if we use parentheses to write the expression as
5 · (4 + 2), the value of the expression changes.
The parenthesis tells us to add 4 to
2 before multiplying by 5.
Adding 4 and 2 gives us
6. When we then multiply by 5
we get 30.
References
- McAdams, David E.. All Math Words Dictionary, parenthesis. 2nd Classroom edition 20150108-4799968. pg 135. Life is a Story Problem LLC. January 8, 2015. Buy the book
- Keigwin, H. W.. Principles of Elementary Algebra. pg 4. www.archive.org. Ginn & Company. 1886. Last Accessed 12/3/2018. http://www.archive.org/stream/principlesofelem00dupurich#page/4/mode/1up/search/parenthesis. Buy the book
- Bettinger, Alvin K. and Englund, John A.. Algebra and Trigonometry. pg 17-18. www.archive.org. International Textbook Company. January 1963. Last Accessed 12/3/2018. http://www.archive.org/stream/algebraandtrigon033520mbp#page/n18/mode/1up. Buy the book
More Information
Cite this article as:
McAdams, David E. Parenthesis. 4/27/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. http://www.allmathwords.org/en/p/parenthesis.html.
Revision History
4/27/2019: Changed equations and expressions to new format. (
McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (
McAdams, David E.)
12/1/2018: Removed broken links, updated license, implemented new markup. (
McAdams, David E.)
12/23/2009: Added "References". (
McAdams, David E.)
9/2/2008: Added 'More Information'. (
McAdams, David E.)
7/12/2007: Initial version. (
McAdams, David E.)