Pronunciation: /dɪˈkris/ Explain

Arrow up for increase, arrow down for decrease.
Figure 1: Decrease and increase.

When a quantity decreases, it goes down.[2] If there were 200 birds on a lake 1 year ago and 185 birds are on the lake this year, the number of birds on the lake has decreased by 15.


  1. McAdams, David E.. All Math Words Dictionary, decrease. 2nd Classroom edition 20150108-4799968. pg 55. Life is a Story Problem LLC. January 8, 2015. Buy the book
  2. decrease. Encyclopedia Britannica. Merriam-Webster. Last Accessed 7/3/2018. Buy the book

Cite this article as:

McAdams, David E. Decrease. 12/21/2018. All Math Words Encyclopedia. Life is a Story Problem LLC.

Image Credits

Revision History

12/21/2018: Reviewed and corrected IPA pronunication. (McAdams, David E.)
7/3/2018: Removed broken links, updated license, implemented new markup, implemented new Geogebra protocol. (McAdams, David E.)
1/26/2009: Added image. (McAdams, David E.)
12/4/2008: Added 'More Information'. (McAdams, David E.)
3/5/2008: 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