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

Toán Lớp 6: 35×55-185×11+121×5 làm hộ em ạ

Toán Lớp 6: 35×55-185×11+121×5 làm hộ em


Comments ( 2 )

  1. 35 × 55 – 185 × 11 + 121 × 5
    = 11 × 5 × 35 – 11 × 185 + 11 × 11 × 5
    = 11 × ( 5 × 35 – 185 + 11 × 5 )
    = 11 × ( 175 – 185 + 55 )
    = 11 × ( – 10 + 55 )
    = 11 × 45
    = 495

  2. 35×55-185×11+121×5
    =35xx5xx11 – 185 xx11  +11xx11xx5
    =11xx(35xx5-185+11xx5)
    =11xx(175-185+55)
    =11xx45
    =595
    @thew

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