Tired of students forgetting to line up the decimal during DECIMAL Addition & Subtraction?Help provide your students with a SUPPLEMENTAL AID that they can use to automatically LINE UP their decimals while keeping PLACE VALUE in mind. Decimal placement in addition and subtraction is a COMMON ERROR, widely taken advantage of during STATE ASSESSMENTS. This foundational Supplemental Aid is a great way to help students build BEST PRACTICES when they are adding and provide a SAFE STRUCTURE for sho