MathsClass

A blog about teaching and learning in a maths classroom.

Million, billion, trillion

Thursday, 12 March 2009 | 3 Comments

{summary} {body}

Posted in • Lesson IdeaNumberMediaPhoto | Short URL: http://mths.co/1431

Comments

Liz on  12 March 09  at  01:42 PM #
i was of the understanding that a billion in australia and england was a million million and that in usa was a thousand million so being a billionaire in america was more common

author

Simon Job on  13 March 09  at  04:44 AM #
Me too, but it seems that has changed - hence this post. Looking in a couple of Year 7 textbooks: "New Century Maths 7":http://www.thomsonlearning.com.au/secondary/Maths/ncm/book7/index.asp: billion = 1 000 000 000 "MathScape 7":http://www.macmillan.com.au/secondary/onix/isbn/9780732980825?open&template=domSecondaryFeature&label=Mathscape&ed=test/seced.nsf: 1 billion = 1 thousand million = 1000000000 So, the text book writers got the memo of the change.
Tim on  14 April 09  at  01:03 PM #
Perhaps this is more of a language issue than a maths issue. My high school dictionary has both definitions of a billion. The foreign language dictionaries I checked only went up to a million.

Post a comment

Commenting is not available in this channel entry.

New  Subscribe to the …

MathsLinks
email newsletter

Get updates…



Twitter   Facebook   Pinterest

About

Simon Job — eleventh year of teaching maths in a public high school in Western Sydney, Australia.
MathsClass is about teaching and learning in a maths classroom. more→

Archive

by date

by category

Search

Elsewhere

@simonjob
updates via @mathslinks

Recently read/found.

View All | RSS