a  0,8.x=3.2
         x= 3.2: 0,8
         x = 4 
b  6,2x= 43.18+18.82
   6,2x=  62
       x= 62 : 6,2 
       x=10
 

Điền một từ để hoàn thành đoạn văn:

Trung is 13 years old and he is a .......... at Nguyen Duy school. He learns different .............. at school. At 9. 00 every day, all students have a ............... of twenty fifteen minutes. Most of them go into the .......... at recess.They take part ....... many activities. Trung often ........... marbles with his friends, sometimes they play blindman' s bluff or catch. The girl usually ................... rope. But talking is the most ................... activity at recess. After fifteen minutes at recess, all students are very happy.

Chia động từ trong ngoặc:

1. Nam is very ( interest) ............... in History and Geography.

2. The ( energy) .............. students often play soccer and basketball.

3. Hoang will be a ( fame) .............. singer one day.

4. Students feel ( excite) ................ at the recess.

5. That ( sing) .............. sings many famous songs.

6. Students take part in different (act) ........... at recess.