Instead of multiplying a single digit at a time with a number of digits, single digit products are written down and eventually added.
58*26 would be calculated as
8*6=48
8*20=160
50*6=300
50*20=1000
then add up the four numbers to get 1508.
You can take a look at the site:
http://www.atlantatraffic.com/KSUWebsite/?p=825
The formatting limitations of this site does not allow me to align vertical columns, so it will not be illustrative.
how do you do expanded algorithm? here's an example to use for the answer 58*26
2 answers
Thank you so much!! I understand expanded algorithm so much better now!