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

Toán Lớp 4: 54×47-47×53-20-27 tính nhanh nhất chụp ảnh rõ ràng nhé

Toán Lớp 4: 54×47-47×53-20-27 tính nhanh nhất chụp ảnh rõ ràng nhé

Comments ( 2 )

  1. $54 × 47 – 47 × 53 – 20 – 27$
    $= 47 × ( 54 – 53 ) – ( 20 + 27 )$
    $= 47 × 1 – 47$
    = 47 – 47
    = 0
    #$Gin :333$ 
     

  2. 54xx47-47xx53-20-27
    =47xx(54-53)-20-27
    =47xx1-20-27
    =47-20-27
    =47-(20+27)
    =47-47
    =0

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