This is an addition problem because we have the difference in height from the question. The lamp is  centimeters tall and wall is  centimeters taller than the lamp,  is our difference. We can add our difference to the lamp's height to find out how tall the wall is. 

This is an addition problem because we have the difference in length from the question. The pillow is  centimeters long and couch is  centimeters longer than the pillow,  is our difference. We can add our difference to the pillow's length to find out how long the couch is. 

This is an addition problem because we have the difference in height from the question. The grill is  centimeters tall and fence is  centimeters taller than the grill,  is our difference. We can add our difference to the grill's height to find out how tall the fence is. 

This is an addition problem because we have the difference in height from the question. Alison is  centimeters tall and David is  centimeters taller than her,  is our difference. We can add our difference to Alison's height to find out how tall David is. 

This is an addition problem because we have the difference in length from the question. The rug is  centimeters long and room is  centimeters longer than the rug,  is our difference. We can add our difference to the rug's length to find out how long the room is. 

This is an addition problem because we have the difference in length from the question. The table is  centimeters long and room is  centimeters longer than the table,  is our difference. We can add our difference to the table's length to find out how long the room is. 

This is an addition problem because we have the difference in height from the question. Alison is  centimeters tall and David is  centimeters taller than her,  is our difference. We can add our difference to Alison's height to find out how tall David is. 

This is an addition problem because we have the difference in height from the question. The grill is  centimeters tall and fence is  centimeters taller than the grill,  is our difference. We can add our difference to the grill's height to find out how tall the fence is. 

This is an addition problem because we have the difference in length from the question. The pillow is  centimeters long and couch is  centimeters longer than the pillow,  is our difference. We can add our difference to the pillow's length to find out how long the couch is. 

This is an addition problem because we have the difference in height from the question. The lamp is  centimeters tall and wall is  centimeters taller than the lamp,  is our difference. We can add our difference to the lamp's height to find out how tall the wall is.