458 x 105 + 324 x 105 + 217 x 105 +105

= 105 x ( 458 + 324 + 217 + 1 )

= 105 x 1000

= 105000

Đây bạn nhé. Nhớ k cho mk nha

(-105) . 19 + (-76) . 105 - 5 . 105

= 105 . (-19) + (-76) . 105 - 5 . 105

= 105 . [(-19) + (-76) - 5]

= 105 . (-100)

= -10500

= ( - 105 )( 19 - 76 - 5 )

= ( - 105 )( - 62 )

= 6510

= ( 105 )( - 19 - 76 - 5 )

= ( 105 )(  -100 )

= -10500

100¹¹:105⁸-105³+105⁷=105³-105³+105⁷=105⁷

\(105^5.105^6\div105^8-105^3+105^7\)

\(=105^{11}\div105^8-105^3+105^7\)

\(=105^3-105^3+105^7\)

\(=0+105^7\)

\(=105^7\)

105 : [3+7-5] =105:5 =21 

\(105^x.105^3=105^7\)

\(105^x=105^7:105^3\)

\(105^x=105^4\)

\(=>x=4\)

105^x . 105³ = 105⁷

105^x = 105⁷ - 105³

=> x = 7 - 3

x = 4

150^x . 150³ = 150⁷

150^x = 150^7-3

=> x = 7 - 3

x = 4

Chọn đáp án B

III- Choose from the four options given (marked A,B,C or D) one best answer to complete each of the following sentences. Identify your answer by writing the corresponding word or phrase on your answer paper.

11. David’s school ………….. is very bad this term.

A. report B. period C. day D. semester

12. People go to a …………….. to look at the famous works of art.

A. stadium B. gallery C. theater D. fair

13. I’d like to go ……………. very much.

A. camp B. to camp C. a camp D. camping

14. Hoa is reading short stories …………. Jack London.

A. of B. from C. by D. with

15. John ………….. Susan to go out with him but her parents didn’t let her out.

A. insisted B. suggested C. invited D. helped

16. This book is ……………. that I try to read it from beginning to end at one time.

A. so interesting B. so interested C. such interesting D. too interesting

17. “Let it be” is a famous song ……………. . It is one of the best works by this band.

A. singing by the Beatles B. was sung by the Beatles

C. sung by the Beatles D. sang by the Beatles

18. He ………… the train ticket at home.

A. took B. put C. brought D. left

19. She was ………….. of watching television.

A. interested B. tired C. tiring D. pleased

20. My mother ………….. me that I should wake up earlier.

A. told to B. said C. was told D. said to

21. Our teacher asked us ……………. in class.

A. not to talk B. to not talk C. no talk D. without talking

22. Peter broke his leg when he fell ………….. his bike.

A. in B. on C. off D. of

23. You should …………… your lesson before the examination.

A. read B. look C. revise D. study

24. Hung is …………… do the crossword puzzles.

A. intelligent enough to B. intelligent enough

C. enough intelligent D. enough intelligent to

25. Her math result is …………….. than her English result.

A. bad B. bader C. worse D. well

26. His father is very proud ……………… him.

A. of B. with C. on D. about

27. Yesterday I came …………. your brother when I was going to school.

A. of B. to C. about D. across

28. Students should work …………. to make their parents happy.

A. hard B. hardly C. in hard way D. more hardly

29. Keep all dangerous things out of children’s …………. .

A. hands B. place C. reach D. head

30. When I was young, I used ……………. on a farm.

A. to live B. live C. to living D. living

III- Choose from the four options given (marked A,B,C or D) one best answer to complete each of the following sentences. Identify your answer by writing the corresponding word or phrase on your answer paper.

11. David’s school ………….. is very bad this term.

A. report B. period C. day D. semester

12. People go to a …………….. to look at the famous works of art.

A. stadium B. gallery C. theater D. fair

13. I’d like to go ……………. very much.

A. camp B. to camp C. a camp D. camping

14. Hoa is reading short stories …………. Jack London.

A. of B. from C. by D. with

15. John ………….. Susan to go out with him but her parents didn’t let her out.

A. insisted B. suggested C. invited D. helped

16. This book is ……………. that I try to read it from beginning to end at one time.

A. so interesting B. so interested C. such interesting D. too interesting

17. “Let it be” is a famous song ……………. . It is one of the best works by this band.

A. singing by the Beatles B. was sung by the Beatles

C. sung by the Beatles D. sang by the Beatles

18. He ………… the train ticket at home.

A. took B. put C. brought D. left

19. She was ………….. of watching television.

A. interested B. tired C. tiring D. pleased

20. My mother ………….. me that I should wake up earlier.

A. told to B. said C. was told D. said to

21. Our teacher asked us ……………. in class.

A. not to talk B. to not talk C. no talk D. without talking

22. Peter broke his leg when he fell ………….. his bike.

A. in B. on C. off D. of

23. You should …………… your lesson before the examination.

A. read B. look C. revise D. study

24. Hung is …………… do the crossword puzzles.

A. intelligent enough to B. intelligent enough

C. enough intelligent D. enough intelligent to

25. Her math result is …………….. than her English result.

A. bad B. bader C. worse D. well

26. His father is very proud ……………… him.

A. of B. with C. on D. about

27. Yesterday I came …………. your brother when I was going to school.

A. of B. to C. about D. across

28. Students should work …………. to make their parents happy.

A. hard B. hardly C. in hard way D. more hardly

29. Keep all dangerous things out of children’s …………. .

A. hands B. place C. reach D. head

30. When I was young, I used ……………. on a farm.

A. to live B. live C. to living D. living

III- Choose from the four options given (marked A,B,C or D) one best answer to complete each of the following sentences. Identify your answer by writing the corresponding word or phrase on your answer paper.

11. David’s school ………….. is very bad this term.

A. report B. period C. day D. semester

12. People go to a …………….. to look at the famous works of art.

A. stadium B. gallery C. theater D. fair

13. I’d like to go ……………. very much.

A. camp B. to camp C. a camp D. camping

14. Hoa is reading short stories …………. Jack London.

A. of B. from C. by D. with

15. John ………….. Susan to go out with him but her parents didn’t let her out.

A. insisted B. suggested C. invited D. helped

16. This book is ……………. that I try to read it from beginning to end at one time.

A. so interesting B. so interested C. such interesting D. too interesting

17. “Let it be” is a famous song ……………. . It is one of the best works by this band.

A. singing by the Beatles B. was sung by the Beatles

C. sung by the Beatles D. sang by the Beatles

18. He ………… the train ticket at home.

A. took B. put C. brought D. left

19. She was ………….. of watching television.

A. interested B. tired C. tiring D. pleased

20. My mother ………….. me that I should wake up earlier.

A. told to B. said C. was told D. said to

21. Our teacher asked us ……………. in class.

A. not to talk B. to not talk C. no talk D. without talking

22. Peter broke his leg when he fell ………….. his bike.

A. in B. on C. off D. of

23. You should …………… your lesson before the examination.

A. read B. look C. revise D. study

24. Hung is …………… do the crossword puzzles.

A. intelligent enough to B. intelligent enough

C. enough intelligent D. enough intelligent to

25. Her math result is …………….. than her English result.

A. bad B. bader C. worse D. well

26. His father is very proud ……………… him.

A. of B. with C. on D. about

27. Yesterday I came …………. your brother when I was going to school.

A. of B. to C. about D. across

28. Students should work …………. to make their parents happy.

A. hard B. hardly C. in hard way D. more hardly

29. Keep all dangerous things out of children’s …………. .

A. hands B. place C. reach D. head

30. When I was young, I used ……………. on a farm.

A. to live B. live C. to living D. living

(-105).47 - 105.53

= 105.(-47) - 105.53

= 105.(-47 - 53)

= 105. (-100)

= -10500

x+100=210

   x=210-100

   x=110

k cho mik nha

X+100=105+105

X+100=210

X=210-100

X=110

x  + 100 = 105 + 105

x + 100 = 210

x = 210 - 100

x = 110 

505 nha bn tick mk di mà