1. Visible difference
Read one place window at a time. 1-digit - 1-digit.
1-digit - 1-digit
1 visual step / small difference
Practice Level 1
A few quick rounds make each dropped digit feel light; borrow is the only thing to keep.
Start Level1 visual step / small difference
Read one place window at a time. 1-digit - 1-digit.
A few quick rounds make each dropped digit feel light; borrow is the only thing to keep.
Start Level