Journal of the Mathematics Council of the Alberta Teachers’ Association
Volume 27 Issue 3, April 1989
6 – 11
Doris Schattschneider
Addition is commutative and associative-so what? It does not matter, when you sum several numbers, in which order you add them or which subtotals you form and then add’ to get the total. It always comes out to the same result. This principle is used more often in everyday occurrences than we realize. Here are a few examples.
