Yes ElizabethN! I learned this system when I was 12 and still use it. People think I am a human calculator when I do this. I later added the trick of moving my foot to different positions for hundreds and can add long lists of numbers super quick. I haven't introduced it to DD yet out of fear it might confuse her but I think you're right. I need to do that. Thanks!

ETA: I never saw that book. Just forwarded the link to DD's teacher. Thanks again!

Last edited by Pemberley; 05/31/14 10:34 AM.