u trời trả lời câu hỏi cx chưa được tick đúng nhiều như này bao h :))))

sinh nhật tuôi 5/4 nè :">

\(\dfrac{3}{10}+\dfrac{7}{3}:5\)

\(=\dfrac{3}{10}+\dfrac{7}{3\times5}\)

\(=\dfrac{9}{30}+\dfrac{14}{30}\)

\(=\dfrac{23}{30}\)

thì 25 năm = 25/100 thế kỉ = 0,25 thế kỉ

1 năm = 100 thế kỉ

25 năm = 0,25 thế kỉ

Hình có 3 góc vuông

\(\text{a) 530 dm2 = 53 000 cm2 }\)

\(\text{b) 3 000 000 m2 = 3 km2}\)

I. Rearrange the words and phrases to make meaningful sentences:

1. housework/ help/ Robots/ do /the/ will /me/.

=> Robots will help me do the housework.

2. if/ washes/ car /he/ my/, / I/ him/ 30,000 /dong/ give/ will/.

=> If he washes my car, I will give him 30,000 dong.

3. Sydney /the/ cleanest/ the /is /and /the /most /in /city /world/ beautiful/.

=> Sydney is the most cleanest and beautiful city in the world.

4. my /mother /shopping /twice/ a /goes /week/.

=> My mother goes shopping twice a week.

5. I /thirsty/ am /so /I/ buy/ a/ of /will/ bottle /mineral /water/.

=> I am thirsty so I will buy a bottle of mineral water.