This is a set of task cards for finding the missing side when measuring area and perimeter.
Each card has a picture of a real life object. Some of the dimensions are labeled but one is missing (as indicated by a ?). The question provides either the total area or perimeter and asks students to find the length of the missing side.
• 20 task cards
• recording sheet
• answer key
✪ This resource is included in my Third Grade YEAR LONG BUNDLE