Pronunciation: /ɪˈvæl.juˌeɪt/ Explain

To evaluate an expression, values are substituted for variables, and the expression is simplified.[2]

Example 1
Evaluate 3 + 2x when x = 5.
3 + 2 · 5 Use the substitution property of equality to substitute 5 for x
3 + 10 Simplify the multiplication. 2·5 = 10.
13 Simplify the addition. 3 + 10 = 13.


  1. McAdams, David E.. All Math Words Dictionary, evaluate. 2nd Classroom edition 20150108-4799968. pg 73. Life is a Story Problem LLC. January 8, 2015. Buy the book
  2. Wentworth, George; Smith, David Eugene; Harper, Herbert Druery. Fundamentals of practical mathematics. pg 74. www.archive.org. Ginn and Company. 1922. Last Accessed 7/9/2018. http://www.archive.org/stream/fundamentalsofpr00wentuoft#page/74/mode/1up/search/evaluate. Buy the book

Cite this article as:

McAdams, David E. Evaluate. 4/20/2019. All Math Words Encyclopedia. Life is a Story Problem LLC. https://www.allmathwords.org/en/e/evaluate.html.

Revision History

4/20/2019: Updated expressions and equations to match new format. (McAdams, David E.)
12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/5/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
1/31/2010: Added "References". (McAdams, David E.)
2/10/2009: Expanded descriptions in example. (McAdams, David E.)
7/28/2008: Added vocabulary links. (McAdams, David E.)
8/8/2007: Initial version. (McAdams, David E.)

All Math Words Encyclopedia is a service of Life is a Story Problem LLC.
Copyright © 2018 Life is a Story Problem LLC. All rights reserved.
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License