1 xe tải chở tối đa 10 tấn hàng. Cửa hàng gạo có 125 bao gạo, mỗi bao cân nặng 70kg. Hỏi xe tải có chở hết số gạo đó không? Vì sao?
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Một xe tải bé chở được số gạo là:
50 x 16 = 800 (kg)
Một xe tải lớn chở được số gạo là:
70 x 90 = 6300 (kg)
Xe tải lớn chở được nhiều hơn xe tải bé số gạo là:
6300 – 800 = 5500 (kg) = 55 tạ
Đáp số: 55 tạ gạo
Bài giải :
Xe tải bé chở được tổng số gạo là :
16 x 50 = 800 ( kg )
= 8 ( tạ )
Xe tải lớn chở được tổng số gạo là :
90 x 70 = 6300 ( kg )
= 63 ( tạ )
Xe tải lớn chở được nhiều hơn xe tải bé số gạo là :
63 - 8 = 55 ( tạ )
Đáp số : 55 tạ .
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
Xe đó chở \(30\times40+40\times20=1200+800=2000\left(kg.gạo\right)=2\left(tấn.gạo\right)\)
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
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
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
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.
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
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.
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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