In a competitive exam, there are 50 questions. Students can score 3 marks for each correct answer while 2 marks are subtracted for each incorrect answer. If Mary answered 18 questions correctly, how many marks did she get?
Nam had a test with 25 questions. If his answer is right, 7 points is added and 2 points is subtracted for each wrong answer. No points are taken for unanswered questions. Finally Nam has got 95 points. How many questions did Nam answer correctly?
tae kwon took part in a mathematics quiz comprising 10 questions. 7 marks were awarded for a correct answer and 3 marks were were deducted for a wrong answer
if tea kwon scored 50 marks for the quiz , how many questions did he answer correctly?
DỊCH
tae kwon đã tham gia một bài kiểm tra toán học bao gồm 10 câu hỏi. Trả lời đúng được 7 điểm và trả lời sai bị trừ 3 điểm
Nếu tea kwon ghi được 50 điểm cho câu đố, anh ấy đã trả lời đúng bao nhiêu câu hỏi?
Giúp mình với mọi người ơi!
\(\text{Gọi số câu mà tae... trả lời đúng là x; trả lời sai là y, ta có: }\)
\(\hept{\begin{cases}x+y=10\\7x-3y=50\end{cases}\Rightarrow\hept{\begin{cases}3x+3y=30\\7x-3y=50\end{cases}\Rightarrow}}\hept{\begin{cases}3x-30=-3y\left(1\right)\\7x-3y=50\left(2\right)\end{cases}}\)
\(\text{Thay }-3y=3x-30\text{ ở (1) vào (2), ta được }:\)
\(7x+\left(3x-30\right)=50\Rightarrow10x-30=50\Rightarrow x=8\Rightarrow y=2\)
\(\text{Vậy teakwon trả lời đúng 8 câu, sai 2 câu }\)
bài giải
nếu tea kwon làm đúng hết tất cả số câu thì anh ấy được số điểm là :
10 * 7 = 70 ( điểm )
mỗi câu sai bị trừ số điểm so với câu đúng là :
3 + 7 = 10 ( điểm )
số điểm anh làm mất là :
70 - 50 = 20 ( điểm )
số câu anh làm sai là :
20 : 10 = 2 ( câu )
số câu anh làm đúng là :
10 - 2 = 8 ( câu )
đáp số : 8 câu
tae kwon took part in a mathematics quiz comprising 10 questions. 7 marks were awarded for a correct answer and 3 marks were were deducted for a wrong answer
if tea kwon scored 50 marks for the quiz , how many questions did he answer correctly?
DỊCH
tae kwon đã tham gia một bài kiểm tra toán học bao gồm 10 câu hỏi. Trả lời đúng được 7 điểm và trả lời sai bị trừ 3 điểm
Nếu tea kwon ghi được 50 điểm cho câu đố, anh ấy đã trả lời đúng bao nhiêu câu hỏi?
Giúp mình với mọi người ơi!
III/ Choose the best answer A, B, C, or D for each blank.
1. He wants to get high marks in the final exam, ................. he is trying his best.
A. but B. so C. and D. because
2. How many TV ................. are there in Viet Nam?
A. comedians B. channels C. remote control D. telephone
3. ................. can kids learn from TV?
A. Where B. What C. When D. Who
4. Television keeps children from ................. part in outdoor activities.
A. take B. took C. taking D. taken
5. Peter …………….. three goals for our team and made it a hat trick.
A. scores B. scored C. plays D. played
6. Our school football team ………….. the match with Nguyen Du school last Saturday.
A. wins B. won C. scores D. scored
7. Playing sports helps us get ……………..
A. free B. fat C. fittest D. fitter
8. Minh’s dream is to become a ……………..
A. loser B. champion C. contest D. gamer
9. I’d like to watch motor racing because it is very ……………..
A. frightening B. exciting C. excited D. boring
10. My sister often …………….. badminton in her free time.
A. play B. plays C. playing D. to play
11. When you go to the zoo, don’t …………….. the animals.
A. do B. play C. watch D. tease
12. Sports and games …………….. an important part in our life.
A. play B. do C. make D. do
13. I usually play football when I have ……………..
A. spare time B. good time C. no time D. times
14. …………….. do you do judo? - Twice a week.
A. Why B. How often C. Where D. When
15. A popular programme has a lot of …………….. .
A. channels B. comers C. viewers D.comedy
16. Daisy …………….. swimming with her friends last weekend
A. went B. go C. is going D. goes
17 Terry …………….. any sports when he was in grade 5.
A. don't play B. didn't played C. doesn't play D. didn't play
18. …………….. there Olympic Games in 2017?
A. Is B. Are C. Was D. Were
19. Our city is very crowded. How about ……………..?
A. yours B. you C. your D. me
20. I love my football club. Does Phong like ……………..?
A. our B. his C. my D. hers
1. He wants to get high marks in the final exam, ................. he is trying his best.
A. but B. so C. and D. because
2. How many TV ................. are there in Viet Nam?
A. comedians B. channels C. remote control D. telephone
3. ................. can kids learn from TV?
A. Where B. What C. When D. Who
4. Television keeps children from ................. part in outdoor activities.
A. take B. took C. taking D. taken
5. Peter …………….. three goals for our team and made it a hat trick.
A. scores B. scored C. plays D. played
6. Our school football team ………….. the match with Nguyen Du school last Saturday.
A. wins B. won C. scores D. scored
7. Playing sports helps us get ……………..
A. free B. fat C. fittest D. fitter
8. Minh’s dream is to become a ……………..
A. loser B. champion C. contest D. gamer
9. I’d like to watch motor racing because it is very ……………..
A. frightening B. exciting C. excited D. boring
10. My sister often …………….. badminton in her free time.
A. play B. plays C. playing D. to play
11. When you go to the zoo, don’t …………….. the animals.
A. do B. play C. watch D. tease
12. Sports and games …………….. an important part in our life.
A. play B. do C. make D. do
13. I usually play football when I have ……………..
A. spare time B. good time C. no time D. times
14. …………….. do you do judo? - Twice a week.
A. Why B. How often C. Where D. When
15. A popular programme has a lot of …………….. .
A. channels B. comers C. viewers D.comedy
16. Daisy …………….. swimming with her friends last weekend
A. went B. go C. is going D. goes
17 Terry …………….. any sports when he was in grade 5.
A. don't play B. didn't played C. doesn't play D. didn't play
18. …………….. there Olympic Games in 2017?
A. Is B. Are C. Was D. Were
19. Our city is very crowded. How about ……………..?
A. yours B. you C. your D. me
20. I love my football club. Does Phong like ……………..?
A. our B. his C. my D. hers
Read the following passage and mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the questions.
If you enjoy cycling for pleasure, doing it in London can be a shock. There are not enough lanes especially for bikes, and making your way through the traffic can be very risky. But if you have great passion, cycling in London can be exciting, and it is an inexpensive way of keeping fit if you live there. Some cyclists don’t mind spending a lot of money on expensive bikes. However, if you just want a basic bike that is only for occasional use, there are many cheap choices. Several markets have cheap bikes on sale which may not be impressive to look at but should be satisfactory. You should buy a cycling helmet if you want to cycle in London. Wearing a cycling helmet is not compulsory in Britain, but it is a good idea to wear one for protection.
According to the passage, cycling in London is ____________
A.
easy
B.
boring
C.
tiring
D.
difficult
Mark the letter A, B, C or D on your answer sheet to indicate the correct answer to each of the following questions.
There are about 50 ________ for each vacancy
A. competitors
B. attendants
C. applicants
D. interviewers
Đáp án C
- competition (n): cuộc thi
- attendant (n): người phục vụ, người theo hầu
- applicant (n): người xin việc
- interviewer (n): người phỏng vấn
Dựa vào ngữ nghĩa của câu, ta chọn “applicants”
Dịch: Có hơn 50 người xin việc cho mỗi chỗ trống.
Alice’s mathematics exam had 30 algebra questions and 50 geometry questions, each worth 1 mark. She got 70% of the algebra questions correct, and 60% of her questions correct. How many geometry questions did she answer correctly?
cảm ơn cậu nhưng trên máy nó đề là 27
ai iups mình nhớ hi lời giải đầy đũ nhá
Alice’s mathematics exam had 30 algebra questions and 50 geometry questions, each worth 1 mark. She got 70% of the algebra questions correct, and 60% of her questions correct. How many geometry questions did she answer correctly?
She answered : 50. (60/100)= 30 geometry questions
5. TEAM QUIZ. Work in two groups. Follow the instructions.
(Làm việc theo hai nhóm. Làm theo chỉ dẫn.)
- Write five quiz questions for the other team, starting with How. Use the ideas in the box. Make sure you can answer your own questions!
- Take turns asking and answering the questions. Score a point for each correct answer.
1. How many students are there in our class?
(Có bao nhiêu học sinh trong lớp của chúng ta?)
There are 40. (Có 40.)
2. How much time do we learn at school every day?
(Chúng ta học bao nhiêu thời gian ở trường mỗi ngày?)
We learn 4,5 hours at school every day.
(Chúng ta học 4,5 giờ ở trường mỗi ngày.)
3. How fast can a monkey move from tree to tree?
(Khỉ có thể di chuyển từ cây này sang cây khác nhanh như thế nào?)
A monkey can move from tree to tree up to 56,32 km/h.
(Một con khỉ có thể di chuyển từ cây này sang cây khác với vận tốc 56,32 km / h.)
4. How big is Russia?
(Nước Nga lớn như thế nào?)
It’s 17.130.000 km² big.
(Nó rộng là 17.130.000 km².)
5. How often do we have English?
(Chúng ta có tiếng Anh thường xuyên như thế nào?)
We have English four times a week.
(Chúng tôi có tiếng Anh bốn lần một tuần.)
6. How high can a kangaroo jump?
(Kangaroo có thể nhảy cao bao nhiêu?)
A kangaroo can jump 1,83m high.
(Một con kangaroo có thể nhảy cao 1,83m.)
7. How far is it from our school to the bookstore?
(Từ trường học đến nhà sách bao xa?)
It’s about 2 kilometres.
(Khoảng 2 km.)
8. How small is Vatican City?
(Thành phố Vatican nhỏ bao nhiêu?)
It’s just 0,52 square kilometres.
(Nó chỉ 0,52 km vuông.)
9. How hot can the Sahara desert reach?
(Độ nóng của sa mạc Sahara có thể đạt tới mức nào?)
It can reach 49 degrees Celsius during the day.
(Nó có thể lên tới 49 độ C vào ban ngày.)