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

Toán Lớp 4: 1/25 m2 + 435cm2 = …cm2 Tớ đg cần gấp

Toán Lớp 4: 1/25 m2 + 435cm2 = …cm2
Tớ đg cần gấp

Comments ( 2 )

  1. 1m^2=10000cm^2
    →1/25m^2= 10000.  1/25 = 400cm^2
    ⇒400cm^2 + 435cm^2 =835cm^2
     

  2. Giải đáp:
    $\frac{1}{25}$ $m^{2}$ + 435$cm^{2}$  = …$cm^{2}$ 
    =$\frac{1}{25}$ $m^{2}$ + 435$cm^{2}$ 
    =400 $cm^{2}$ +435 $cm^{2}$ 
    =835 $cm^{2}$ 
    ⇒$\frac{1}{25}$ m² + 435 $cm^{2}$  =835 $cm^{2}$ 

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