1, 7 hectares = () square meters 50 square decimeters = () square centimeters.

8 square kilometers = () hectares 2000 square decimeters = () square meters.

2. 1 has (), and 8 () is.

3. Look at money and write decimals.

() yuan

() yuan

4. The perimeter of a square with a side length of 4 cm is () and the area is ().

5. fill in the box >,