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

Toán Lớp 6: 125.43 – 25.74 + 125 . 87 – 25.56

Toán Lớp 6: 125.43 – 25.74 + 125 . 87 – 25.56

Comments ( 2 )

  1. 125 . 43 – 25 . 74 + 125 . 87 – 25 . 56
    = 125 . ( 43 + 87 ) – ( 25 . 74 + 25 . 56 )
    = 125 . 130 – 25 . ( 74 + 56 )
    = 125 . 130 – 25 . 130
    = 130 xx ( 125 – 25 )
    = 130 xx 100
    = 130 00

  2. 125 . 43 – 25 . 74 + 125 . 87 – 25 . 56
    = 125 . ( 43 + 87) – 25  . ( 74 + 56)
    = 125 . 130 – 25 .  130
    = ( 125 – 25) . 130
    = 100 . 130
    = 13000

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