a)3 giờ 25 phút +2giờ 50 phút=5 giờ 75 phút hay 6 phút 15 giây

b)đổi: 8 giờ 30 phút =7 giờ 90 phút

7giờ 90 phút-4 giờ 45 phút= 3 giờ 45 phút

c)6 giờ 35 phút x 2=12 giờ 70 phút hay 13 giờ 10 phút

d)12 phút 30 giây : 5=2 phút 30 giây

a)3,5 thế kỉ = 350 năm

b)150 tháng = 12,5 năm

21,25 km

a)25% tổng số học sinh lớp 5A

b)9 bạn tham gia hoạt động thể thao

8 giờ sáng

My favourite story is"The Fox and the Grapes". In the story, the fox tries to jump and reach some grapes but he fails. Then, he says the grapes are sour to feel better. My favourite character is the fox because he is funny. The lesson is:"Don't act like you don't want something just because you can't have it".

1: They are at the aquarium.

2: They are looking at the fish and taking photos.

3: It looks like wonderful place to learn about sea life.

1: I usually wear a coat, a scarf and boots to keep warm.

2: I am going to visit my grandparents in the countryside.

3: I go to school by bicycle every day.

This summer, i am going to visit Da Nang city. It is about 500 kilometers from my home town, so i will get there by plane. I plan to swim and eat seafood. It is a wonderful place.

Câu 1: They are the hare and the tortoise.

Câu 2: It is 120 km.

Câu 3: They are going to visit Trường Tiền bridge.

Câu 3: It's hot and sunny.