A free sample worksheet from 'Subtractor Genius'. (Instructions not included.)
Check out the super-simple subtraction method that I learned in Germany in the 1960's. It's so easy to teach because it's so easy for your students to learn. Even your low performers will get this and will run with it. If you teach in the US, you have never seen anything like it!
Find my 'Subtractor Genius" teaching booklet at the top of my product page.