\(X\times123=322+766\\ \text{X}\times123=1088\\ \text{X}=1=1088\div123\\ \text{X}=\dfrac{1088}{123}\)

Oke

Bài 1 : bà 61 tuổi

Bài 2: 400 đồng

Bài 3: lớn nhất có 2 chữ số là : 99

Số liền sau kết quả tổng trên là : 556

Ko có số nào có 2 chữ số chia hết cho 1 000 000 000 cả 

Có số quả là :

4x3+2=14(quả)

Đáp sô : 14 quả

Đổi \(2\dfrac{3}{5}m=\dfrac{13}{5}m\)

Chiều rộng hình chữ nhật đó là :

\(\dfrac{13}{5}-\dfrac{3}{4}=\dfrac{37}{20}\left(m\right)\)

Diện tích hình chữ nhật đó là :

\(\dfrac{13}{5}x\dfrac{37}{20}=\dfrac{481}{100}m^2=4,81m^2\)

Đáp số : 4,81m ²

tk

This morning is the first day of winter. I woke up early to look at the streets on a special day like this.

The big road runs across the front of my house, so from the balcony, I can see the entire street. It was only 6 a.m., it was still early, so the streets were deserted. It was just dawn, the corner of the horizon was pink, a rare pearl was slowly rising. The sky is heavy, gray, filled with gray and white clouds. The air is cold, dry, with cold winds blowing intermittently. The wind blew through the rows of crocodile trees on both sides of the sidewalk, causing the leaves to droop because of the cold. The wind blows dry leaves and trash from the sidewalk into every corner. At this time, the street lights were still lit, the weak yellow light had difficulty penetrating the thick fog. I can only see the houses near me, but the end of the road is blurry. About 30 minutes later, the sky was bright. On a winter day, it will not be sunny and a bit gloomy. Shops on both sides of the street began to open to welcome customers. Pushcarts selling breakfast sticky rice, dumplings, bread and coffee also stand scattered along the road. From the small alleys, the stream of people also poured out more and more. Everyone wore thick, tight scarves to avoid the cold. People walking on the sidewalk put their hands in their pockets, their heads bowed low, to avoid the cold wind. Maybe because it's cold, the stores aren't too crowded. People are more interested in hot porridge dishes with fragrant smoke. Until it was completely bright, I still couldn't hear the little bird singing like every other day. Maybe it's because it's too cold, so my whole family is already on winter break.

The street on an early winter morning was deserted and boring, but still gave me interesting and different feelings. I really like those moments of peace and relaxation.

This morning is the first day of winter. I woke up early to look at the streets on a special day like this.

The big road runs across the front of my house, so from the balcony, I can see the entire street. It was only 6 a.m., it was still early, so the streets were deserted. It was just dawn, the corner of the horizon was pink, a rare pearl was slowly rising. The sky is heavy, gray, filled with gray and white clouds. The air is cold, dry, with cold winds blowing intermittently. The wind blew through the rows of crocodile trees on both sides of the sidewalk, causing the leaves to droop because of the cold. The wind blows dry leaves and trash from the sidewalk into every corner. At this time, the street lights were still lit, the weak yellow light had difficulty penetrating the thick fog. I can only see the houses near me, but the end of the road is blurry. About 30 minutes later, the sky was bright. On a winter day, it will not be sunny and a bit gloomy. Shops on both sides of the street began to open to welcome customers. Pushcarts selling breakfast sticky rice, dumplings, bread and coffee also stand scattered along the road. From the small alleys, the stream of people also poured out more and more. Everyone wore thick, tight scarves to avoid the cold. People walking on the sidewalk put their hands in their pockets, their heads bowed low, to avoid the cold wind. Maybe because it's cold, the stores aren't too crowded. People are more interested in hot porridge dishes with fragrant smoke. Until it was completely bright, I still couldn't hear the little bird singing like every other day. Maybe it's because it's too cold, so my whole family is already on winter break.

The street on an early winter morning was deserted and boring, but still gave me interesting and different feelings. I really like those moments of peace and relaxation.

\(\dfrac{5}{3}\div\dfrac{4}{3}x\dfrac{4}{5}\\ =\dfrac{5}{3}x\dfrac{4}{3}x\dfrac{4}{5}\\ =\dfrac{5}{4}x\dfrac{4}{5}=\dfrac{20}{20}=1\)

\(\dfrac{17}{4}-3\times\dfrac{7}{6}\\ =\dfrac{17}{4}-\dfrac{21}{6}\\ =\dfrac{51}{12}-\dfrac{42}{12}=\dfrac{9}{12}=\dfrac{3}{4}\)