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

Toán Lớp 4: Tính sao cho thuận tiện 5241-2345-241-655

Toán Lớp 4: Tính sao cho thuận tiện
5241-2345-241-655

Comments ( 2 )

  1. 5241 – 2345 – 241 – 655
    = (5241 – 241) – ( 2345 + 655)
    = 5000 – 3000
    = 2000

  2. 5241 – 2345 – 241 – 655
    =( 5241 – 241 ) – ( 2345 + 655 )
    =     5000         –       3000
    = 2000

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

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