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

Toán Lớp 2: Nốt mấy câu này nữa ạ 328+380+322 382+38+82 283+848+287 372+387+288 835+39+575

Toán Lớp 2: Nốt mấy câu này nữa ạ
328+380+322
382+38+82
283+848+287
372+387+288
835+39+575

Comments ( 2 )

  1. 328 + 380 + 322
    = ( 328 + 322) + 380
    = 650 + 380
    = 1030
    382 + 38 + 82
    = ( 382 + 38) + 82
    = 420 + 82
    =502
    283 + 848 + 287
    = ( 283 + 287) + 848
    = 570 + 848
    =1418
    372 + 387 + 288
    = ( 372 + 288) + 387
    = 660 + 387
    = 1047
    835 + 39 + 575
    = ( 835 + 575) + 39
    =1410 + 39
    = 1449
     

  2. Giải đáp:
    328+380+322
    =(328+322)+380
    =650+380
    =1030
    382+38+82
    =(382+38)+82
    =420+82
    =502
    283+848+287
    =(283+287)+848
    =570+848
    =1418
    372+387+288
    =(372+288)+387
    =660+387
    =1047
    835+39+575
    =(835+575)+39
    =1410+39
    =1449

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