=(51-52)+(53-54)+(55-56)

=(-1)+(-1)+(-1)

=-3

Unit 5:

Cua Lo is very far from Ha, it is about 300 km.Cua Lo is really interesting, wide, flat and sandy beach. The waves are very strong, you will have a lot of fun playing with it. There are lots of good sights and seafood there. You can stay at Binh Minh Hotel. It's a very nice and comfortable hotel, it's also quite close to the sea. Hot weather all day. The sea is cool and clear, because the afternoon is very windy. People can go swimming twice a day. Food is delicious but not very expensive. You can take a lot of pictures of the sea. I like Cua Lo very much.

1.Hoi An is a older town than other towns in Viet Nam ☐

= > F. Hoi An is the oldest town in VietNam.

2.It is located on the heighest section of Thu Bon river ☐

= > F. It is on the lower section of the Thu Bon river.

3.There are a lot of colourful lanterns hung around the town ☐

= > T

4.The price of clothes in Hoi An town is not really expensive ☐

= > T

9 Remember to do your homework

You must do your homework

8.No one in my neighborhood is cleaner than this hotel .

This hotel is the cleanest in my neighborhood

I often play hopscotch with my friends on the weekends.

Gọi số học sinh khối 6 của trường THCS A là a (a>0)

Ta có:

Mà 

a: OA+AB=OB

hay AB=3cm

= 58.( -47 +44)+58 .103 

= 58. -3 +58 .103

= 58. (103-3)

= 58 .100 

= 5800

2x−1−12=20

⇒2x−1=32

⇒2x−1=25

⇒x−1=5

⇒x=6

5108:5106+20220−23:8

=52+1−8:8

=25+1−1

=25