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

Toán Lớp 5: 54,9 + 7 phần 10 + 9 phần 100=

Toán Lớp 5: 54,9 + 7 phần 10 + 9 phần 100=

Comments ( 2 )

  1. 54,9 + 7/10 + 9/100
    = 5490/100 + 70/100 + 9/100
    = 5569/100
    = 55,69
     

  2. $\text{54,9 + $\dfrac{7}{10}$ + $\dfrac{9}{100}$}$
    $\text{= 54,9 + 0,7 + 0,09}$
    $\text{= 55,6 + 0,09}$
    $\text{= 55,69}$

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