This a great project to help students understand the value of $100,000. It also helps students practice subtraction with regrouping across zeros. Students should be constantly checking for the reasonableness of their answers and be persistent and accurate in their work. This is a great opportunity for families to be involved. As the holidays are here it is a great connection to be looking closely at ads while evaluating and discussing the ads that we are bombarded with daily. This is a fun project that always bring interesting insights! I just updated this to make it printer friendly.