Bài1
`6,34 dam^2 = ...634m^2...`
`0,157 dam ² = ..15,7m^2...`
`400 dm^2 = ..4m^2...`
`1,038 dam^2= ...103,8m^2...`
`4 m^2 52 dm^2 = ...4,52m^2...`
`3451,6 cm ² = ....0,34516m^2...`
Bài 2
`7 ha 65 dam^2 = ...7,65... ha`
`2 m^2 5 cm^2 = ..0,020005.. dam^2`
`4,6 km^2 = ..460... ha`
`3560 m^2 = ..356000... dm^2`
`534 ha = ...5,34.. km^2`
`25,37 m^2 = ...0,002537.. ha`
`45,8 dam^2 = ...0,458... ha`
`75,3 ha = ...753000.. m^2`
`534,8 cm^2 = ...0,0538.. m^2`
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