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![](https://rs.olm.vn/images/avt/0.png?1311)
1827 m =...............km ..................m = ....................km
1827 m = 1 km 827 m = 1,827 km
![](https://rs.olm.vn/images/avt/0.png?1311)
(a x 5 + a x4 + a) x ( 6+ 2 ) x 2 = 290 x 2 x 1 - ( 0 x 1000)
(a x 5 + a x4 + a) x ( 6+ 2 ) x 2 = 290 x 2 x 1 - 0
(a x 5 + a x4 + a) x ( 6+ 2 ) x 2 = 580
a x (5 + 4 + 1) x 8 x 2 = 580
a x 10 x 16 = 580
a x 160 = 580
a = 580 : 160
a = 3,625
HT và $$$
And rảnh thì vào kênh TienDBfan để xem nha
![](https://rs.olm.vn/images/avt/0.png?1311)
\(a.1256\times5-4\times1256+1256\)
\(=1256\times5-4\times1256+1256\times1\)
\(=1256\times\left(5-4+1\right)\)
\(=1256\times2\)
\(=2512\)
\(b.\dfrac{2}{3}\div\dfrac{6}{2}+\dfrac{2}{3}\div\dfrac{6}{3}+\dfrac{2}{3}\div6\)
\(=\dfrac{2}{3}\times\dfrac{2}{6}+\dfrac{2}{3}\times\dfrac{3}{6}+\dfrac{2}{3}\times\dfrac{1}{6}\)
\(=\dfrac{2}{3}\times\left(\dfrac{2}{6}+\dfrac{3}{6}+\dfrac{1}{6}\right)\)
\(=\dfrac{2}{3}\times1\)
\(=\dfrac{2}{3}\)
![](https://rs.olm.vn/images/avt/0.png?1311)
đổ đầy can 5 lít rồi đổ qua cho can 4 lít. Đổ can 4 lít ra ngoài rồi đổ số nước còn lại của can 5 lít sang can 4 lít. Lúc này can 4 lít có 1 lít nước. Tiếp tục đổ đầy can 5 lít rồi đổ qua can 4 lít thì số nước trng can 5 lít sẽ là 5-3=2 (lít)
đổ đầy can 5 lít sau sau đó đổ sang can 4 lít
làm 2 lần như vậy
![](https://rs.olm.vn/images/avt/0.png?1311)
9,25 dm = 92,5 cm
Diện tích chiếc khăn đỏ đó là:
92,5 x 24 : 2 = 1110 (cm2)
ĐS: 1110 cm2
tk cho mk nha
Diện tích hình tam giác là:
9,25 x 24 : 2 = 111 ( dm2 )
Đáp số: 111 dm2
Diện tích tam giác dễ thôi
Lấy cao nhân đáy chia đôi là thành
![](https://rs.olm.vn/images/avt/0.png?1311)
200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000+200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000=4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
k mình nha làm ơn đó
=4000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000