150+150=??
150+150+150+150+150=
150+150+150+150+150=750
k mình nha
150+150+150+150+150=
tinh nhanh
150 x 1+150 x 2+150 x 3+....+150 x 99+150 x 100
150 x 1 + 150 x 2 + 150 x 3 +...+ 150 x 99 + 150 x 100
= 150 x ( 1 + 2 + 3 + ... + 99 + 100 )
= 150 x 5050 = 757500
B = 150 x 1 + 150 x 2 + 150 x 3 + ... + 150 x 99 + 150 x 100
B = 150 x (1 + 2 + 3+... + 99 + 100)
Đặt: A = 1 + 2 + 3 +...+ 100
Dãy số trên là dãy số cách đều với khoảng cách là:
2 - 1 = 1
Số số hạng của dãy số trên là:
(100 - 1) : 1 + 1 = 100 (số hạng)
A = (100 + 1) x 100 : 2 = 5050
B = 150 x 5050
B = 757500
150+150+150+150+500=?
150x4+500
=600+500
=1100
Ai k mình 3 k k lại!
Giúp mình đi!
150 + 150 + 150 + 150 + 150
= 150 x 5
= 750
alo alo món tick xào đang chờ các bn đây
Question 2. If we _____ wasting water, there will be a shortage of freshwater in a few decades.
A. turn on
B. look for
C. look after
D. go on
Question 3. My best friend's birthday is _____ 16th September.
A. on
B. in
C. at
D. since
Question 4. Asian people eat rice. Rice _____ in many parts of Asia.
A. grown
B. is grown
C. have grown
D. has grown
Question 5. She didn't pass her exam _____ she studied lazily.
A. so
B. although
C. because
D. but
Question 6. Children shouldn't be allowed _____ time ______ computer games.
A. waste - to play
B. wasting - playing
C. to waste - to playing
D. to waste - playing
Question 7. Most people believe that school days are the _____ days of their life.
A. better
B. best
C. more best
D. good
Question 8. We _____ a big party for Debbie's birthday.
A. annoyed
B. arranged
C. arrived
D. appeared
Question 9. I think scientists should not be allowed to perform _____ on animals. It's cruel.
A. experiences
B. duties
C. experiments
D. miracles
Question 10. Jennifer was _____ when she realised that there was a hole in her pants.
A. embarrassed
B. depressed
C. confident
D. pleasant
Question 11. The roots take in nutrients and water from the _____.
A. soil
B. leaves
C. stem
D. flower
Question 12. What is a dinosaur?
A. a kind of animal that lives in nature today
B. a kind of animal that lives only in a zoo today
C. one kind of animal that lived 50 years ago
D. one kind of animal that lived millions of years ago
Question 13. Day and night are caused by _____.
A. Earth's spin
B. the way sunlight hits the Moon
C. the Sun's path around the Earth
D. the shape of the Earth
Question 14. Two friends are talking about their upcoming summer holiday.
Jack: "I'm going to take a five-day trip to Singapore."
Jill: "_____"
A. The same to you.
B. No, of course not.
C. You're welcome.
D. Oh, really? Have a great trip!
Question 15. The classmates are planning to take a field trip.
The monitor: "Why don’t we visit Hue Citadel this weekend?
Jean: "_____. We can learn about Vietnamese history."
A. No, thanks
B. No, let’s do that
C. OK, I don’t like
D. That’s a good idea
Question 16. Jenny: "Congratulations on your winning the first prize at the talent contest!"
Tom: "______"
A. You’re welcome.
B. Not at all.
C. Yes, certainly.
D. That’s very kind of you
giúp mk đi mk trên 10 SP nè
Question 2. If we _____ wasting water, there will be a shortage of freshwater in a few decades.
A. turn on
B. look for
C. look after
D. go on
Question 3. My best friend's birthday is _____ 16th September.
A. on
B. in
C. at
D. since
Question 4. Asian people eat rice. Rice _____ in many parts of Asia.
A. grown
B. is grown
C. have grown
D. has grown
Question 5. She didn't pass her exam _____ she studied lazily.
A. so
B. although
C. because
D. but
Question 6. Children shouldn't be allowed _____ time ______ computer games.
A. waste - to play
B. wasting - playing
C. to waste - to playing
D. to waste - playing
Question 7. Most people believe that school days are the _____ days of their life.
A. better
B. best
C. more best
D. good
Question 8. We _____ a big party for Debbie's birthday.
A. annoyed
B. arranged
C. arrived
D. appeared
Question 9. I think scientists should not be allowed to perform _____ on animals. It's cruel.
A. experiences
B. duties
C. experiments
D. miracles
Question 10. Jennifer was _____ when she realised that there was a hole in her pants.
A. embarrassed
B. depressed
C. confident
D. pleasant
Question 11. The roots take in nutrients and water from the _____.
A. soil
B. leaves
C. stem
D. flower
Question 12. What is a dinosaur?
A. a kind of animal that lives in nature today
B. a kind of animal that lives only in a zoo today
C. one kind of animal that lived 50 years ago
D. one kind of animal that lived millions of years ago
Question 13. Day and night are caused by _____.
A. Earth's spin
B. the way sunlight hits the Moon
C. the Sun's path around the Earth
D. the shape of the Earth
Question 14. Two friends are talking about their upcoming summer holiday.
Jack: "I'm going to take a five-day trip to Singapore."
Jill: "_____"
A. The same to you.
B. No, of course not.
C. You're welcome.
D. Oh, really? Have a great trip!
Question 15. The classmates are planning to take a field trip.
The monitor: "Why don’t we visit Hue Citadel this weekend?
Jean: "_____. We can learn about Vietnamese history."
A. No, thanks
B. No, let’s do that
C. OK, I don’t
D. That’s a good idea
Question 16. Jenny: "Congratulations on your winning the first prize at the talent contest!"
Tom: "______"
A. You’re welcome.
B. Not at all.
C. Yes, certainly.
D. That’s very kind of you
# Học tốt #
2.D
3.A
4.B
5.A
6.D
7.B
8.B
9.C
10.A
11.A
12.D
13.C
14.D
15.D
16.D
150 . 150 . 150 = ??????????????????
150 . 150 . 150 =
22500 . 150 =
3375000
hoac
150 . 150 . 150 =
150^3 =
3375000
x + 150 = 150 + 150
x + 150 = 150 + 150
x + 150 = 300
x = 300 - 150
x = 150
x + 150 = 150 + 150
x + 150 = 300
x = 300 - 150
x = 150
tk mk mk tk lại
x+150=300
x=300-150
x=150
k mình mình k lại
Viết lại câu sang cách nói thứ 2 sao cho nghĩa không đổi
1. What about having a picnic on Sunday?
Let’s …………………………………………………………………………………
2. How about taking some photos?
Why don’t we …………………………………………………………………….?
3. Let’s have some cold drinks.
How about ………………………………………………………………………..?
4. Why don’t we go to the post office?
What about ………………………………………………………………………?
5. Your hair is long.
You ………………………………………………………………………………
6. That boy’s legs are strong.
That boy …………………………………………………………………………
7. That child’s eyes are lovely.
That child …………………………………………………………………………
8. Their house is old.
They ………………………………………………………………………………
9. Her school bag is new.
She ………………………………………………………………………………
10. His test is awful.
He ………………………………………………………………………………
11. Her nose is small.
She ………………………………………………………………………………
12. How much is your book?
How much ………………………………………………………………………?
13. How much are two boxes of chocolates?
How much ………………………………………………………………………?
14. How much do cans of peas cost?
How much ………………………………………………………………………?
15. How much does the red box cost?
How much ………………………………………………………………………?
16. How is the weather in HCM city?
What ……………………………………………………………………….……?
17. What is the weather like in Vietnam?
How ………………………………………………………………………..……?
18. How is the weather in Spring?
What ……………………………………………………………………………?
19. What food do you like best?
What is …………………………………………………………………………?
20. What sports does she like best?
What is …………………………………………………………………………?
21. He likes apples best.
His ………………………………………………………………………………
22. We like pink and blue best.
Pink and blue are ………………………………………………………………
23. What subject does he like best?
What is …………………………………………………………………………
24. They like badminton best.
Badminton is ……………………………………………
2. Điền giới từ phù hợp vào chỗ trống
1. What are you going to do …………………………..the weekend?
2. What are we going to do …………………………..the vacation?
3. We are going …………………………..vacation.
4.………………………….. Sunday mornings, we go fishing.
5.………………………….. the morning, we often do morning exercises.
6. We are going to camp …………………………..three days.
7. What are you going to do…………………………..your free time?
8. He is going to stay…………………………..his friend’s house…………………………..a week.
9. He is going to stay …………………………..his uncle and aunt.
10. We are going to stay …………………………..a hotel…………………………..Thanh Hoa.
11.…………………………..the winter, we usually play basketball.
12. What do you do …………………………..the spring?
13. What’s the weather like…………………………..March?
14. He wants strong boots because he often goes walking…………………………..the mountains
15. They sometimes go sailing …………………………..the fall.
16. She often goes swimming …………………………..the summer.
17. How often do you late…………………………..school?
18. How often do you help your Mom…………………………..her housework?
19. We have Math, English and Music ………………………….. Tuesday and Thursday.
20. We are going to see a movie ………………………….. Sunday evening
3. Chia động từ trong ngoặc cho hợp thì
1. The girls _________________ (skip) at the moment.
2. Nam ________________ his bike at present. (ride).
3. We’d like _________________ (go) swimming. We don’t like going__________ (jog)
4. Mai never _______________ (stay) up late.
5. He ____________ (brush) his teeth often.
6. Lan always _______________ (do) her tests carefully.
7. He wants _______________ (travel) around the world.
8. Minh’d like _______________ (walk) in the rain.
9. Now Mr. Jones ______________ T.V. (not, watch)
10. What about ______________ (have) some coca cola?
11. What (you, watch) _________________________________ now?
12. What about______________ (eat) some rice now?
13. I ______________ (play) sports now. I love going_____________ (play) sports.
14. Do you want ____________some food for me?(buy)
15. The girls _____________ (jog) now.
16. They ________________ (play) soccer at the moment.
17. (She, take) _______________________ some photos at present?
18. She________________ to eat fried rice. (not, want)
19. They _____________ (swim) at present
20. Would you like ______________ some food? (buy)
làm hộ mik ai xng mik tick 3 cái
1. let's have a picnic on Sunday
2. why don't we take some photos?
150 x 150 x 150 = ?
150 x 150 x 150 = 3375000 nha
tk nhé
kb nữa
\(cho\) \(2\) \(phân\) \(số\) :\(\frac{a}{b}\)\(và\)\(\frac{a+n}{b+n}\).\(So\) \(sánh\) \(\frac{a}{b}\) \(với\) \(\frac{a+n}{b+n}\) \(với\) \(n\) \(thuộc\) \(N\)
xét 3th
th1, a=b
=>a/b=a+n/b+n
th2,a<b
=>a/b<a+n/b+n
th3,a>b
=>a/b>a+n/b+n