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

Toán Lớp 4: tinh bằng cách thuận :52-42+37+28-38+63

Toán Lớp 4: tinh bằng cách thuận :52-42+37+28-38+63

Comments ( 2 )

  1. $\#phnn$
    52-42+37+28-38+63
    =(52-42)+(37+63)+28-38
    =10+100+28-38
    =110+28-38
    =138-38
    =100.

  2. 52-42+37+28-38+63
    = ( 52-42)+(38-28)+(63+37)
    = 10+10+100
    =20+100
    =120

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