This is a set of 10 addition and subtraction mystery picture pages (5 addition, 5 subtraction). Copy a blank addition mystery picture page or subtraction mystery picture page and one of the lettered pages with addition or subtraction problems. Students solve the addition/subtraction problem and write the answers on the lines provided. The answers they get are the squares they need to color in on the blank hundreds chart pages. An answer key is provided to show you what the completed picture should look like. Students write what the picture is on the line under the hundreds chart.
A lot of the problems students have to solve include doubles facts, doubles + or - 1, and adding or subtracting with 10's. If using this with first grade students I would only give these to advanced students or students who have a good understanding of how to add and subtract using a hundreds grid.