Monday, November 22, 2010

Subtracting 2 and 3-digit numbers

1 comment:

Kimberly said...

great video. I find that when symbols are used for number placement as in Arithmetic Village with jewels, sacks and treasure chests, borrowing is better understood. (sometimes you might need to open a sack of ten jewels to subtract...) for a more detailed explanation go to http://www.arithmeticvillage.com/books/linus-minus/linus-activities/