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

Toán Lớp 5: 3,45 m2 = =–ha

Toán Lớp 5: 3,45 m2 = ………………..ha

Comments ( 2 )

  1. 1 ha = 10000 m^2
    => 3,45 m^2 = 3,45 : 10000
    => 3,45 m^2 = 0,000345 ha

  2. 1m²= 0,0001ha
    → 3,45m²= 0,000345ha
    Ta lấy:
    3,45xx0,0001= 0,000345
    @N

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