1. The bill isn’t right. They (make)……have made…….. a mistake.

2. Don’t you want to see this programme? It ……has started…….(start).

3. I (turn)……have turned….. the heating on. It’ll soon get warm in here.

4. …Have…..they (pay)…paid….. money for your mother yet?

5. Someone (take)……has taken…………. my bicycle.

6. Wait for few minutes, please! I (finish)………have finished……. my dinner.

7. …Have……you ever (eat)…eaten…….. Sushi?

8. She (not/come)…………hasn't come… here for a long time.

9. I (work)………have worked….. here for three years.

10. …Have……… you ever ……been……..(be) in New York?

11. You (not/do) ……haven't done…….yor project yet, I suppose.

12. I (just/ see)…have just seen……. Andrew and he says he …has…..already (do)…done……. about half of the plan.

13. I ……have…..just (decide)…decided…… to start working next week.

14. He (be)………has been…. at his computer for seven hours.

15. She (not/have) ………hasn't had……any fun a long time.

16. My father (not/ play)…hasn't played…….. any sport since last year.

17. I’d better have a shower. I (not/have)……haven't had…. one since Thursday.

18. I don’t live with my family now and we (not/see)……haven't seen……. each other for five years.

19. I…have… just (realize)……realized……... that there are only four weeks to the end of term.

20. The train drivers (go)…have gone…… on strike and they stopped working at twelve o’clock.

21. How long…….. (you/know)…have you known…. each other?

22. ……Have you taken….(You/ take)………… many photographs?

23. (She/ eat)………Has she eaten………. at the Royal Hotel yet?

24. He (live) ……has lived…….here all his life..

25. Is this the second time he (lose)………has lost……. his job?

26. How many bottles……has…… the milkman (leave) ……left…….? He (leave) ……has left….. six.

27. I (buy)………have bought…. a new carpet. Come and look at it.

28. She (write)……has written…….. three poems about her fatherland.

29. We (finish) ………have finished……………three English courses.

30. School (not, start)………hasn't started……..yet.

#\(yGLinh\)

1. The bill isn’t right. They (have made)………….. a mistake.

2. Don’t you want to see this programme? It ………….(has started).

3. I (have turned)……….. the heating on. It’ll soon get warm in here.

4. …Have…..they (paid)…….. money for your mother yet?

5. Someone (has taken)………………. my bicycle.

6. Wait for few minutes, please! I (have finished)……………. my dinner.

7. …Have……you ever (eaten)………….. Sushi?

8. She (hasn't came)…………… here for a long time.

9. I (have worked)………….. here for three years.

10. …Have……… you ever …………..(been) in New York?

11. You (haven't done) ………….yor project yet, I suppose.

12. I (have just seen)………. Andrew and he says he …has…..already (done)………. about half of the plan.

13. I …have……..just (decided)……… to start working next week.

14. He have (been)…………. at his computer for seven hours.

15. She (hasn't had) ……………any fun a long time.

16. My father (hasn't played)……….. any sport since last year.

17. I’d better have a shower. I (haven't had)………. one since Thursday.

18. I don’t live with my family now and we (haven't seen)…………. each other for five years.

19. I…have… just (realized)…………... that there are only four weeks to the end of term.

20. The train drivers (have went)……… on strike and they stopped working at twelve o’clock.

21. How long…have….. (you known)………. each other?

22. …Have…….(You taken)………… many photographs?

23. (Has She eaten)………………. at the Royal Hotel yet?

24. He (has lived) ………….here all his life..

25. Is this the second time he (has lost)……………. his job?

26. How many bottles……has…… the milkman (left) ………….? He (left) ……….. six.

27. I (have bought)…………. a new carpet. Come and look at it.

28. She (has writen)………….. three poems about her fatherland.

29. We (have finished) ……………………three English courses.

30. School (haven't started)……………..yet.

\(\dfrac{3}{5}\times\dfrac{4}{3}+\dfrac{4}{3}-\dfrac{3}{5}\times\dfrac{4}{3}\\ =\left(\dfrac{3}{5}\times\dfrac{4}{3}-\dfrac{3}{5}\times\dfrac{4}{3}\right)+\dfrac{4}{3}\\ =0+\dfrac{4}{3}=\dfrac{4}{3}\)

\(B=\dfrac{3}{5}.\dfrac{4}{3}+\dfrac{4}{3}-\dfrac{3}{5}.\dfrac{4}{3}=\dfrac{4}{3}\)

Đề không rõ ràng. Bạn xem lại đề nhé.

a) \(34,2=34\dfrac{2}{10}=34\dfrac{1}{5}\\ 123,027=123\dfrac{27}{1000}\\ 67,157=67\dfrac{157}{1000}\)

b) \(78,095=78\dfrac{95}{1000}=78\dfrac{19}{200}\\ 2002,028=2002\dfrac{28}{1000}=2002\dfrac{7}{250}\\ 199,0023=199\dfrac{23}{10000}\)

a: \(8m^2=\dfrac{8}{1000000}km^2=\dfrac{1}{125000}km^2=0,000008km^2\)

\(8cm^2=\dfrac{8}{10000}m^2=\dfrac{1}{1250}m^2=0,0008m^2\)

\(4mm^2=\dfrac{4}{1000000}m^2=\dfrac{1}{250000}m^2=0,000004m^2\)

b: \(7dm^2=\dfrac{7}{100}m^2=0,07m^2\)

\(2m^2=\dfrac{1}{50}dam^2=0,02m^2\)

\(5cm^2=\dfrac{5}{10000}m^2=\dfrac{1}{2000}m^2=0,0005m^2\)

watermelon

orange

mangosteen

jackfruit

fruit custard

watermelon

orange

mangosteen

jackfruit

fruit custard

22060,35 

175,5x125,7=22060,35

\(30+20+\left[30+\left(20\times160\right)\right]\)

\(=30+20+\left[30+3200\right]\)

\(=30+20+3230\)

\(=50+3230\)

\(=3280\)

3280

*Lưu ý : Trong bài làm mình có thay đổi tên của mỗi phần để nó theo thứ tự lần lượt nhé.

1) Tỉ số phần trăm của 25 và 40 là:

     25 : 40 x 100 = 62,5 %

2) Tỉ số phần trăm của 18 và \(\dfrac{4}{5}\) là :

     18 : \(\dfrac{4}{5}\) x 100 = 2250 %

3) Tỉ số phần trăm của 0,3 và 0,96 là:

     0,3 : 0,96 x 100 = 31,25 %

4) Tỉ số phần trăm của 2 và \(\dfrac{3}{4}\) là:

     2 : \(\dfrac{3}{4}\) x 100 ≈ 226,67 %