interesting (vì playing, going, swimming là activity, còn interesting là cảm xúc)

a, 4725:15= 315

4674:82=57

4935:44= 4935/44

b, 35136:18=1952

18408:52=354

17826:48= 2971/4

chúc bạn học tốt nha!

12. C

13. D

14. A

15. A

16. C

17. A

18. A

19. C

20. B

16. A

17. B

18. 

19. A

20. B

21. B

22. C

23.A

=536851

grows

1. He painted a nice picture yesterday.

2. He played the piano yesterday morning.

3. Lisa and her brother watched TV this morning.

4. Tom watched a video yesterday evening.

5. What did she do this afternoon?

6, Did they play chess in the room?

7. Where were you yesterday morning?

8, I and my father watered the flowers this morning?

9. Tom and David played volleyball yesterday afternoon

10. She went to the park 2 days ago.

C

b. =(12,45+17,55)+(29,65+10,35)+25,25

= 30+ 40+ 25,25

=70 +25,25

= 95,25