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

Toán Lớp 6: 456÷ 4( 34+ 23) -36 34 ,5 + 34 ( 45 -56) + 457

Toán Lớp 6: 456÷ 4( 34+ 23) -36 34 ,5 + 34 ( 45 -56) + 457

Comments ( 2 )

  1. 1)  456 : 4( 34 + 23) – 36
    = 456 : 4 . 57 – 36
    = 114 . 57 – 36
    = 6498 – 36
    = 6462
    2) 34 ,5 + 34( 45 – 56 ) + 457
    = 34,5 – 374 + 457
    = -339,5 + 457
    = 117,5
     

  2. *) 456 : 4 xx (34 + 23) – 36
    = 114 xx 57 – 36
    = 6498 – 36
    = 6462
    *) \text{34,5} + 34 xx (45 – 56) + 457
    = \text{34,5} + 34 xx (-11) + 457
    = \text{34,5} + (-374) + 457
    = (-\text{339,5}) + 457
    = \text{ 117,5}

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