Title: The house should be paved with square bricks. It needs 96 square bricks with an area of 9 square decimeters. If you change it into a square brick with an area of 4 square decimeters, how many pieces do you need?

Solution: If you replace it with a square brick with an area of 4 square decimeters, you need X pieces.

4x=9×96

4x=864

x = 864 \4

x=2 16

Answer: It takes 2 16 bricks to replace them with square bricks with an area of 4 square decimeters.