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

Toán Lớp 4: 49800cm vuông=•••••m vuông•••••dm vuông

Toán Lớp 4: 49800cm vuông=•••••m vuông•••••dm vuông

Comments ( 2 )

  1. 49800cm2= 4m2, 98dm2
    vì 
    4m2= 40000cm2
    98dm2=9800cm2
    chú thích cm2,dm2,m2
    là cm vuông, dm vuông, m vuông

  2. 49800cm²= 4m² 98dm²
    => 4m² = 40000cm²
    => 98dm² = 9800cm²
    40000cm² + 9800cm² = 49800cm²
     

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