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

Toán Lớp 5: 28ha= km2.vậy ANH CHỊ

Toán Lớp 5: 28ha= km2.vậy ANH CHỊ

Comments ( 2 )

  1. $\text{Vì 1ha=0,01km²}$
    $\text{⇒28ha=0,28km²}$

  2. $@Zeng$
    Vì $1km^2=100ha$
    →$28ha=0,28km^2$
     

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

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