Thursday, September 4, 2008

First Lessons in Arithmetic - Lesson X: addition table of threes and fours

"First Lessons in Arithmetic". Print them out and use them as a math worksheet.






WIKI: Addition is written using the plus sign "+" between the terms; that is, in infix notation. The result is expressed with an equals sign.

Lessons in this series:

No comments:

USA:

Recent Posts