124cm 2  =............dm 2                  21mm 2  =...............m 2 17cm 2  =...................mm 2             7km 2  5hm 2  =.............dam 2 2100mm 2  =................cm 2             2m 2  12cm 2  =..............cm 2 45cm 2  =...................dm 2              34dm 2  =...................m 2 347 dm 2  = ......... cm 2               90m 2  200cm 2  = ....... dm 2

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