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

Toán Lớp 4: 268 nhân 123-698nhân 31 trừ 698nhân 1

Toán Lớp 4: 268 nhân 123-698nhân 31 trừ 698nhân 1

Comments ( 2 )

  1.     268 x 123  – 698 x 31 – 698 x 1
    = 268 x 123 – 698 x ( 31 + 1 )
    = 268 x 123 – 698 x 32
    = 32964 – 22336
    = 10628
     

  2. 268 xx 123 – 698 xx 31 – 698 xx 1
    = 268 xx 123 – 698 xx (31 + 1)
    = 268 xx 123 – 698 xx 32
    = 32964 – 22336
    = 10628

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