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7 tháng 4 2015

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)

7 tháng 4 2015

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)

 

12 tháng 1 2015

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

26 tháng 5 2015

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

26 tháng 5 2015

                                               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 

25 tháng 5 2015

 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

25 tháng 5 2015

Bài giải

Khối lượng gạo tẻ xe đó chở được là :

40 x 30 = 1200 kg gạo = 1,2 tấn gạo

Khối lượng gạo nếp xe đó chở được là :

20 x 40 = 800 kg gạo = 0,8 tấn gạo

Khối lượng gạo xe đó chở được tất cả là :

1,2 + 0,8 = 2 tấn gạo

Đáp số: 2 tấn gạo.

7 tháng 9 2021

Số gạo tẻ xe đó chở là:

   40 x 30 = 1200 (kg)

Số gạo nếp xe đó chở là:

   20 x 40 = 800 (kg)

Số gạo xe đó chở là:

   1200 + 800 = 2000 (kg)

                      Đ/S: 2000 kg

7 tháng 9 2021

Số kg gạo nếp là: 

40 x 20 = 800 (kg)

Số kg gạo tẻ là :

30 x 40 = 1200 (kg)

Xe chở tổng số tấn gạo là: 

1200 + 800 = 2000 (kg) = 2 (tấn)

14 tháng 10 2021

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

14 tháng 10 2021

Xe đó chở \(30\times40+40\times20=1200+800=2000\left(kg.gạo\right)=2\left(tấn.gạo\right)\)

19 tháng 11 2020

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

8 tháng 10 2022

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31 tháng 1 2016

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

20 tháng 11 2021
Lấy đâu ra 30;40
26 tháng 12 2018

Hướng dẫn giải:

Số gạo tẻ xe chở được là :

25 x 50 = 1250 (kg)

Số gạo nếp xe chở được là :

30 x 25 = 750 (kg)

Tổng số gạo xe chở được là :

1250 + 750 = 2000 (kg)

Đổi 2000kg = 2 tấn

Đáp số : 2 tấn.

27 tháng 11 2022

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