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

Toán Lớp 7: a)374848-(23+388).129-3838+3738.3 b)3838+(-98.2)-2992+388449

Toán Lớp 7: a)374848-(23+388).129-3838+3738.3
b)3838+(-98.2)-2992+388449

Comments ( 2 )

  1. a) 374848 – ( 23 + 388 ) . 129 – 3838 + 3738 . 3
    =  374848 –  411 . 129 – 3838 + 11214
    =  374848 – 53019 – 3838 + 11214 
    =  321829 – 3838 + 11214 
    =  317991 + 11214 
    =  329205

    b) 3838 + ( -98 . 2 ) – 2992 + 388449 
    =  3838 + ( – 196 ) – 2992 + 388449 
    =  3642 – 2992 + 388449 
    =  650 + 388449 
    =  39499

     Xin 5 sao + CTLHN nha

  2. a)374848-(23+388).129-3838+3738.3
    =374848-411.129-3838+3738.3
    =374848-53019-3838+11214
    =321829-53019-3838+11214
    =268810-3838+11214
    =264972+11214
    =276186
    b)3838+(-98.2)-2992+388449
    =  3838 + ( – 196 ) – 2992 + 388449
    =  3642 – 2992 + 388449
    =  650 + 388449
    =  39499

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