Đáp án:

`3 m ² 5 dm ² = ...3,05...........m ²`

`56 dm ² = ...0,56.......m ²`

`23 cm ²= .......0,23......dm ²`

`2 cm ² 5 mm ²= .....2,05.......cm ²`

`123 , 9 ha = ....1,239... km²`

`30000 m² = .....3... ha`

`42 dm ² = ......0,42......m ²`

`17 dm ² 32 cm ² = ...17,32 dm ²`

`4 m ² 3 dm ² = .....4,03....m ²`

`37 dm ² = ......0,37.........m ²`

`95 km ² = ......9500....... hm ²`

`36 , 9 dm ² = .......0,369......m ²`

Đáp án:

Giải thích các bước giải:

3 m ² 5 dm ² = ...3,05...........m ²

56 dm ² = ...0,56.......m ²

23 cm ²= .......0,23......dm ²

2 cm ² 5 mm ²= .....2,05.......cm ²

123 , 9 ha = ....1,239... km vuông

30000 m vuông = .....3... ha

42 dm ² = ......0,42......m ²

17 dm ² 32 cm ² = ...17,32..... dm ²

4 m ² 3 dm ² = .....4,03....m ²

37 dm ² = ......0,37.........m ²

95 km ² = ......9500....... hm ²

36 , 9 dm ² = .......0,369......m ²