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Oanh Pham
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Mai Phương Uyên
20 tháng 12 2021 lúc 11:01

Trung bình mỗi con nặng là:

12,5 : 5 = 2,5 ( kg )

Đáp số: 2,5 kg.

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Hoàng Thùy Dương
20 tháng 12 2021 lúc 11:01

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lê thị hiền
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hoang phuc
15 tháng 11 2016 lúc 20:54

Thùng rõng cân nặng là;

15,7-12,5-2,8=0,4(kg)

Đáp số: 0,4 kg

tk nhé@@@@@@@@@@@@@@@@@@@

๖ۣۜ๖ۣۜNobi Shizukaッ
16 tháng 11 2017 lúc 12:36

thùng rỗng đó nặng:

15,7-12,5-2,8=0,4(kg)

đ/s..

0o0k nha0o0

Dương Tử&Đặng Luân
21 tháng 11 2019 lúc 19:46

Làm bừa nhé:

                  Bài giải:

    Thùng rỗng cân nặng là:

15,7- 12,5 - 2,8 = 0,4(kg)

                  Đáp số:0,4 kg.

          ^    ^

         (   (    )  )

                #   #

Chúc học tốt nhé ad.Ko chắc đúng đâu.

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le thi to uyen
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Nguyễn Tiến Dũng
13 tháng 11 2016 lúc 16:09

số kg cân nặng thùng muối và muối trong thùng là : 15,7 -12,5=5,2kg

thùng rỗng nặng :5,2-2,8=2,4kg

Công chúa bất bại
9 tháng 11 2017 lúc 19:12

1 phép tính,ko cần 2 phép tính.Rất nhanh nè 

                   thùng rỗng cân nặng 

15,7-12,5-2,8=0,4(kg)

đáp số : 0,4 kg

Nijino Yume
13 tháng 11 2017 lúc 21:48

đúng cái mình đang cần

Hoàng Thị Linh Chi
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Lê Hà Giang
14 tháng 11 2017 lúc 20:03

Số kg muối trong thùng là:12,5+2,8=15,3 kg

Thùng rỗng nặng số kg là: 15,7-15,3=0,4kg

Hà Huệ Linh
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huyền tây
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BestMurad
29 tháng 6 2018 lúc 19:33

Số kg gạo nếp là: \(12,5+7,5=20\) (kg)

Số kg gạo tẻ là: \(20+23,5=43,5\) (kg)

Cửa hàng có số kg gạo là: \(20+43,5=63,5\) (kg)

nguyến phạm khánh linh
15 tháng 11 2020 lúc 10:14

20 đâu ra zị bn

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Đặng Nguyễn Quỳnh Chi
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l҉o҉n҉g҉ d҉z҉
10 tháng 9 2016 lúc 15:12

Hiệu số gạo giữa hai loại au khi bán là:

          67,5 - 12,5 + 12,5 = 67,5 (kg)

Hiệu số phần bằng nhau là

          9 - 4  = 5 (phần)

Số gao nếp lúc đauà là:
         67,5 : 5 x 4 + 12,5 = 26(kg)

Số gao tẻ lúc đauà là:

        67,5 - 26 = 41,5 (kg)

đặng mai thục linh
29 tháng 11 2018 lúc 20:15

sau khi bán 128 kg thì hiệu không đôỉ ,vẫn là 67.5

ta có sơ đồ:

số gạo nếp: |_|_|_|_|

số gạo tẻ:|_||_||_||_||_||_||_||_||_| hiệu:67,5

hiệu số phần bằng nhau là:

9-4=5(phần)

số gạo tẻ là:

67,5:5x9+12,5=41,5(kg)

số gạo nếp là:

67,5-41,5=26(kg)

đáp số:số gạo nếp:26 kg     số gạo tẻ: 41,5 kg

k cho mình nha

hiệu số phâng

Hồ Thị Quỳnh Như
6 tháng 12 2023 lúc 14:09

Hiệu số gạo giữa hai loại au khi bán là:

          67,5 - 12,5 + 12,5 = 67,5 (kg)

Hiệu số phần bằng nhau là

          9 - 4  = 5 (phần)

Số gao nếp lúc đauà là:
         67,5 : 5 x 4 + 12,5 = 26(kg)

Số gao tẻ lúc đauà là:

        67,5 - 26 = 41,5 (kg)

 

Nông Thị Ngọc Huyền
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Nguyễn Ngọc Anh Minh
25 tháng 5 2016 lúc 13:59

+ Đặt quả cân lên 1 bên đĩa cân, đĩa cân còn lại cho gạo vào đến khi cân thăng bănghf thì bên đĩa cân chứa gạo có 1 kg

+ Đặt quả cân sang đĩa cân chứa 1 kg gạo cho gạo vào đĩa cân bêb kia cho đến khi cân thăng bằng thì bêb đĩa cân không chứa quả cân có 2 kg gạo

+ Dồn gạo ở 2 bên đĩa cân vào 1 túi ta có 3 kg gạo

phương anh
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Đỗ Lâm Quỳnh Anh
19 tháng 11 2015 lúc 14:36

tick mình đi rồi mình giải cho