\(\dfrac{2}{3}\times\dfrac{4}{7}=\dfrac{8}{21}\)

\(7-\dfrac{9}{4}=\dfrac{7}{1}-\dfrac{9}{4}=\dfrac{28}{4}-\dfrac{9}{4}=\dfrac{19}{4}\)

nhớ tích đúng nha

1 km2 = 1 000 000 m2

vậy D. 28 000 000 m2

Bạn nghĩ mình được bao nhiêu điểm trong kì thi vừa rồi?

1.I(get)_________up early the day before yesterday. 2.The earth(circle)_____the sun once every 365 days. 3.Rivers usually(flow)______to the sea. 4. Do you know that man ,who(smoke)_____there. 5.We(be)______from French.We(be)_______there for 20 years. 6. I(move)_______ to another town next week. 7.I(see)_______that film several times because I like it. 8.She always(go)_________go to bed before her mother does. 9.Mary(lose)________her hat for 2 days. 10.______you(take)______\_ a trip to London next week. 11.She rarely(take)________ a bath before dinner. 12.He(not finish)________ doing it yet. He(not see)_______him since Christmas.

59691 nha :33