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

Toán Lớp 4: (Đề bài tính nhanh) 8543-2541-4459+14557

Toán Lớp 4: (Đề bài tính nhanh) 8543-2541-4459+14557

Comments ( 2 )

  1. $\text{8543-2541-4459+1457}$
    $\text{=(8543+14557)-(4459+2541)}$
    $\text{=231000-7000}$
    $\text{=16100}$

  2. 8543-2541-4459+14557
    =(8543+14557)-(2541+4459)
    =23100-7000
    =16100
     

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

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