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

Toán Lớp 5: 0,024km vuông=?héc-ta 4000m vuông=? héc-ta 0,005km vuông=?héc-ta 0,02km vuông=?héc-ta

Toán Lớp 5: 0,024km vuông=?héc-ta
4000m vuông=? héc-ta
0,005km vuông=?héc-ta
0,02km vuông=?héc-ta

Comments ( 2 )

  1. 0,024 km2 = 0,024 . 100 = 2,4 ha
    4000 m2 = 4000 : 10000 = 0,4ha
    0,005 km2 = 0,005 . 100 = 0,5 ha
    0,02 km2 = 0,02 . 100 = 2ha
     

  2. 0,024km2 = 2,4ha
    4000m2 = 0,4ha
    0,005km2 = 0,5ha
    0,02km2 = 2ha
     

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

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