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20 bao ngô nặng số ki-lô-gam là:
40 x 25 = 1000 (kg)
25 bao gạo nặng số ki-lô-gam là:
50 x 20 = 1000 (kg)
Xe đó chở được số tấn gạo và ngô là:
1000 + 1000 = 2000 (kg)
Đổi: 2000kg = 2 tấn
Đáp số: 2 tấn
Số ki-lô-gam của 20 bao ngô là:
40x25=1000(kg)=1 tấn
Số ki-lô-gam gạo là:
50x20=1000(kg)=1 tấn
Xe đó chở số tấn gạo và ngô là:
1+1=2(tấn)
Đáp số:2 tấn
30 bao ngô nặng : 30 x 60 =1800 (kg)
25 bao gạo nặng: 25 x 50=1250 (kg)
xe đó chở được : 1800+1250=3050kg = 3,05( tấn)
có 48 cá bảnh chia đều ra 8 hộp .Hồi 115 chia đều ra mấy hộp
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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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
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.
1﴿chiều rộng là: 78,2‐3,8=74,4
HCN=﴾78,2+74,4﴿*2=305,2
2﴿1 tấn gạo và 1 tấn ngô
3﴿2 số đó là: 27; 9,36
1)chiều rộng là: 78,2-3,8=74,4
HCN=(78,2+74,4)*2=305,2
2)1 tấn gạo và 1 tấn ngô
3)2 số đó là: 27; 9,36