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

Toán Lớp 7: so sách 3/5 0,(6) -4,15 -4(15)

Toán Lớp 7: so sách
3/5 0,(6)
-4,15 -4(15)

Comments ( 2 )

  1. $\text{Ta có:}$ 3/5 = 0,6
    $\text{Mà}$ 0,6 < 0,(6)
    $\text{Vậy}$ 3/5 < 0,(6)
    ————————-
    $\text{Ta có:}$ 4,15 < 4,(15)
    $\Rightarrow$ -4,15 > -4,(15)
    $\text{Vậy}$ -4,15 > -4,(15)
     

  2. ta có:
    3/5 = 0,6 mà 0,6 < 0,(6)
    ⇒ 3/5 < 0,(6)
    ta có:
    vì 4,15 < 4,(15)
    ⇒ -4,15 > -4,(15)

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

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