\(=81\)

\(9x9=81\)                                                                                                                                                                                                       chúc bn học tốt nghen                                                                                                                                                                                         xin tiick

      TÓM TẮT :

Một gói mì                  : 80 g

Một hộp sữa               : 455 g

2 gói mì và 1 hộp sữa :... g ?

     BÀI GIẢI :

Hai gói mì cân nặng là :

  80 x 2 = 160 ( g )

Hai gói mì và một hộp sữa nặng là :

   160 + 455 = 615 ( g )

      Đáp số : 615 g bạn nhé

350 : 7 = 50

420 : 6 = 70

350:7=50

420:6=70

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còn cái nịt ; còn đúng cái nit thôi

1/6 số vở của An là: 
        54 x 1/6 = 9 (quyển vở)
Số vở của Bình là:
        9 + 11 = 20 (quyển vở)
                 Đáp số: 20 quyển vở

1/6 số vở của An :

54 x 1/6 = 9 ( quyển )

Bình có :

9 + 11 = 20 ( quyển )

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