Phân số chỉ số trang bạn Nam đọc được trong ngày thứ 3 là:

\(1-\frac{2}{5}-\frac{1}{3}=\frac{15-6-5}{15}=\frac{4}{15}\)(tổng số trang)

Quyển sách có số trang là:

\(32:\frac{4}{15}=32.\frac{15}{4}=120\) (trang)

\(\left(\frac{1}{12}+\frac{1}{20}+\frac{1}{30}+...+\frac{1}{90}\right).x=\frac{14}{30}\)

\(\left(\frac{1}{3.4}+\frac{1}{4.5}+\frac{1}{5.6}+...+\frac{1}{9.10}\right).x=\frac{14}{30}\)

\(\left(\frac{1}{3}-\frac{1}{4}+\frac{1}{4}-\frac{1}{5}+\frac{1}{5}-\frac{1}{6}+...+\frac{1}{9}-\frac{1}{10}\right).x=\frac{14}{30}\)

\(\left(\frac{1}{3}-\frac{1}{10}\right).x=\frac{14}{30}\)

\(\frac{10-3}{30}.x=\frac{14}{30}\)

\(\frac{7}{30}.x=\frac{14}{30}\)

\(x=\frac{14}{30}:\frac{7}{30}\)

\(x=\frac{14}{30}.\frac{30}{7}\)

\(x=2\)

He isn't light and he is ____.

A.heavy. B.strong.

Viết đoạn văn (7-10 câu) nêu cảm nhận của em về:

- Sự gắn bó của tre đối với đời sống con người:

+ Trong lao động, sản xuất

+ Trong chiến đấu

- Vẻ đẹp của thiên nhiên trong văn bản Cô Tô:

+ Cảnh mặt trời mọc trên đảo Cô Tô

✳ Mỗi dấu "+" các bn viết cho mình 1 đoạn văn nha!

Mọi người làm bao nhiêu cũng được. Mk cảm ơn trước nha!

II. Put the words in the box into two ( (/ θ / and / δ /) )

/ θ / : tooth, thunder, birthday, third, through, warmth, athlete, throat.

/ δ / : than, although, rhythm, leather, together, either.

Use the correct form of the verbs:

1. I haven't visited Da Lat yet. ( not visit)

2. My father has worked in this factory since 2010. ( work)

3. Did You meet Hien three ago? ( meet)

4. Lan hasn't done her homework yet. ( not do)

5. Tung usually goes to school. (go)

6. Kate didn't know about the exam and she did very badly. ( not know)

7. It was a great film in 2010. ( be)

8. The people in the cafe were friendly when I was there yesterday. (not be)

9. Our teacher told us to be quiet yesterday. ( tell)

10. When did you see her ? ( see)

11. I studied arts when I was at school. (study)

12. Who was the first man on the Moon? ( be)

13. My mother drives me to school every day. ( drive)

14. Children shouldn’t buy firework at Tet. (buy)

15. Did they sell their house last year? ( sell)

16. Have you ever been to London, Mr Nam? ( be)

17. I have studied English since 2015. ( study)

18. My uncle visited Paris last Wednesday. ( visit)

19. Do you clean the room every day? ( clean)

20. Don’t open the door. It’s very cold.