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

Toán Lớp 4: 12×62+52-18+48= 25+5×69-45+520= 52+45×2-56=

Toán Lớp 4: 12×62+52-18+48=
25+5×69-45+520=
52+45×2-56=

Comments ( 2 )

  1.        
        16×62+52-18+48
       = 744+52-18+48
       = 796-18+48
       = 778+48
       = 826
              25+5×69-45+520
           = 25+345-45+520
           = 370-45+520
           =325+520
           = 845
             52+45×2-56
         = 52+90-56
         = 142-56
         =86

  2. a) 12xx62+52-18+48
    =744+52-18+48
    =796-18+48
    =778+48
    =826
    b) 25+5xx69-45+520
    =25+345-45+520
    =370-45+520
    =325+520
    =845
    c) 52+45xx2-56
    =52+90-56
    =142-56
    =86

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

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