Xiao Li's new home is 80 decimeters long floor tiles to lay the ground, which needs 200 pieces. If you use square tiles with an area of 1 square meter to lay the floor, how many pieces do you need? What's the area of the house? Why 128 yuan, 130 square meters,

Xiao Li's new home is 80 decimeters long floor tiles to lay the ground, which needs 200 pieces. If you use square tiles with an area of 1 square meter to lay the floor, how many pieces do you need? What's the area of the house? Why 128 yuan, 130 square meters,

80 decimeters should be 80 centimeters, right?
80cm = 0.8m
The house area is 0.8 & # 178; × 200 = 128 square meters
Therefore, if the area is 1 square meters of brick to shop, need 128