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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 5: 203 m2= dm2 20145 dam= km Dam 9,075hm2=–..m2 89467mm2=–..dm2 A.c giải giúp em ạ

Toán Lớp 5: 203 m2= dm2
20145 dam= km Dam
9,075hm2=……….m2
89467mm2=……….dm2
A.c giải giúp em ạ

Comments ( 2 )

  1. 203  m^{2} = 20300  dm^{2}
    20145  dam = 201  km 45  dam
    (1  km = 100 dam ;  1  dam = 0,01  km)
    9,075  hm^{2} = 90750  m^{2}
    89467  mm^{2} = 8,8467  dm^{2}

  2. 203 m^2 = 20300 dm^2
    – 1 m^2 = 100 dm^2
    20145 dam = 201 km 45 dam 
    – 1 km = 100 dm
    9,075 hm^2 = 90750 m^2
    – 1 hm^2 = 100 m^2
    89467 mm^2 = 8,8467 dm^2
    – 1 dm^2 = 10000 mm^2
     

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222-9+11+12:2*14+14 = ? ( )