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Trương Thị Trúc Đào
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Hn . never die !
16 tháng 7 2021 lúc 14:21

Giải :

Đổi : \(600\text{ kg}=\frac{3}{5}\text{ tấn}\)

Xe tải nặng là :

\(2-\frac{3}{5}=\frac{7}{5}\left(=1\frac{2}{5}\right)\text{tấn}\)

=> Chọn C

~HT~

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Rose Black
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Ngọc Mai_NBK
4 tháng 4 2021 lúc 14:48

Trả lời:

Đổi đơn vị:

600Kg= \(\frac{3}{5}\)Tấn

=> Xe tải nặng: 2-\(\frac{3}{5}\)=\(\frac{7}{5}\)=(1\(\frac{2}{5}\))tấn (Chọn C)

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Lưu Trà My
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Nguyễn Minh Anh
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Nguyễn Hoàng Thơ
19 tháng 11 2020 lúc 21:19

Khối lượng của 30 bao gạo tẻ là:

30 x 40 = 1200 ( kg )

Khối lượng của 40 bao gạo nếp là:

40 x 20 = 800 ( kg )

Đổi : 1200 kg = 1,2 tấn

         800 kg = 0,8 tấn

Xe đó chở được số tấn gạo là:

1,2 + 0,8 = 2 ( tấn )

               Đáp số : 2 tấn gạo

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Nguyễn Đức Thành
8 tháng 10 2022 lúc 20:13

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Nguyễn Hoài Thương
8 tháng 10 2023 lúc 7:53

Xe đó chở số tấn gạo là:

(30×40)+(40×20)=2000(kg)=2(tấn)

                              Đáp số: 2 tấn

nguyenminhhang
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Huỳnh Thị Thùy Vy
31 tháng 1 2016 lúc 6:48

Số kg gạo tẻ là:

30.40=1200 (kg)

Số gạo  nếp là:

40.20=800 (kg)

Xe chở số tấn gạo là:

800+1200=2000(kg)

2000 kg=2 tấn

Đáp số : 2 tấn

Trần Ngọc Hân
20 tháng 11 2021 lúc 14:37
Lấy đâu ra 30;40
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thục hà
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Nguyễn Huy Hoàng
22 tháng 10 2017 lúc 14:10

mình chỉ biết câu 1 thôi : 

lấy số bao gạo tẻ nhân với cân nặng của bao là 30 x 40 = 1200 kg.

sau đó ta cũng làm như cách kia là : 40 x 20 = 800 kg.

ta cộng 2 tích lại bằng : 1200 + 800 = 2000 kg

Hoàng Thị Thanh Trúc
22 tháng 10 2017 lúc 14:18

1. 

30 bao gạo tẻ nặng số ki-lô-gam là : 

40 x 30 = 1200 (kg)

40 bao gạo nếp nặng số ki-lô-gam là : 

20 x 40 = 800 (kg)

Xe đó chở số gạo là :

1200 + 800 = 2000  (kg)

2000kg = 2 tấn

Đáp số : 2 tấn

2.

1 tạ 50kg = 150 kg

Sau khi bán đi 25kg mỗi loại thì hiệu số gạo vẫn không đổi .

Lúc đầu cửa hàng có số gạo tẻ là :

150 : (5-2) x 5 = 250 (kg)

Lúc đầu cửa hàng có số gạo nếp là :

250 - 150 = 100 (kg)

Đáp số : 250kg gạo tẻ

               100kg gạo nếp

3.

a, \(\frac{41}{24}\)

b, \(\frac{194}{65}\)

Bài 3 mình ko chắc lắm.

Chu Quyen Nhan
22 tháng 10 2017 lúc 14:27

mốt làm ơn cho đề ít giùm cái T~T 

1 : 30 bao gạo tẻ cân nặng :

40 x 30 = 1200 ( kg )

40 bao gạo nếp cân nặng :

20 x 40 = 800 ( kg )

30 bao gạo tẻ và 40 bao gạo nếp cân nặng ;

1200 + 800 = 2000 9 kg )

2000 kg = 2 tấn

ĐS:...

The_Supreme_King_Is_NAUT...
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l҉o҉n҉g҉ d҉z҉
7 tháng 4 2015 lúc 14:47

a) 30 bao gạo tẻ cân nặng 30 x 40 =1200 (kg)

40 bao gạo nếp cân nặng 40 x 20 = 800 (kg)

Khối lượng gạo xe đó chở là 1200 + 800 = 2000 (kg)

Đổi 2000kg = 2 tấn

b) Đổi 13km500m = 13500m

Hiệu số phần bằng nhau là 5 - 2 = 3 (phần)

Độ dài đoạn đường AC là 13500 : 3 x 2 = 9000 (m)

Độ dài đoạn đường CB là 13500 + 9000 = 22500 (m)

Độ dài đoạn đường AB là 9000 + 22500 = 31500 (m)

The_Supreme_King_Is_NAUT...
7 tháng 4 2015 lúc 14:39

a) 30 bao gạo tẻ cân nặng 30 x 40 =1200 (kg)

40 bao gạo nếp cân nặng 40 x 20 = 800 (kg)

Khối lượng gạo xe đó chở là 1200 + 800 = 2000 (kg)

Đổi 2000kg = 2 tấn

b) Đổi 13km500m = 13500m

Hiệu số phần bằng nhau là 5 - 2 = 3 (phần)

Độ dài đoạn đường AC là 13500 : 3 x 2 = 9000 (m)

Độ dài đoạn đường CB là 13500 + 9000 = 22500 (m)

Độ dài đoạn đường AB là 9000 + 22500 = 31500 (m)

 

Đỗ Khánh Linh
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nguyen thi thi
12 tháng 1 2015 lúc 14:18

a). số kg gạo tẻ là: 30 x 40= 1200kg

    số kg gạo nếp là: 40 x 20 = 800kg

tổng số tấn gạo xe đó chở là: 1200+800= 2000kg=2 tấn

Christina_Linh
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Nguyễn Đình Dũng
26 tháng 5 2015 lúc 14:01

Số gạo tẻ cân nặng :

30 x 40 = 1200 ( kg )

Số gạo nếp cân nặng  :

40 x 20 = 800 ( kg )

Xe độ cho hàng nặng :

1200 + 800 = 2000 ( kg ) = 2 tấn

                  Đáp số : 2 tấn

Minion
26 tháng 5 2015 lúc 14:03

                                               Bài giải 

Xe đó chở số ki lô gam gạo tẻ là : 30 x 40 = 1200 ( kg )

Xe đó chở số ki lô gam gạo nếp là : 20 x 40 = 800 ( kg )

Xe đó chở số tấn gạo là : 1200 + 800 = 2000 ( kg )

                                 Đổi : 2000 kg = 2 tấn 

                                                     Đáp số : 2 tấn 

Công chúa Bloom
26 tháng 5 2015 lúc 14:03

Số gạo tẻ cân nặng là:

40 x 30 = 1200 (kg)

Số gạo nếp cân nặng là:

20 x 40 = 800 (kg)

Xe đó chở số kg gạo là:

1200 + 800 = 2000 (kg) 

Đổi 2000 kg = 2 tấn

                  Đáp số: 2 tấn