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Thương 2 số là:1,5=3/2
Hiệu so phan bằng nhau là:3-2=1(phần)
=>số lớn là 65:1x3=195
=>số bé la 65:1x2=130
Vậy..
Dịch : Alex có 1 bộ sưu tập huy hiệu rất tuyệt mà anh ấy muốn đếm.Anh ấy biết rằng số huy hiệu nằm trong khoảng 120 -> 150 nhưng ko biết chính xác con số.Anh ấy quyết định đếm nhóm 5 và dư ra 2.Sau đó anh ấy đếm nhóm 6 và dư ra 3.Bạn có thể tính chính xác số huy hiệu mà Alex có ko ?
Giải : Gọi số huy hiệu Alex có là a\(\left(120\le a\le150\right)\)thì a : 5 dư 2 ; a : 6 dư 3
=> a + 3 chia hết cho 5 và 6 (vì 5 - 2 = 3 ; 6 - 3 = 3) => (a + 3)\(⋮\)30 => a + 3 = 150 (vì\(123\le a\le153\)) => a = 147
Vậy Alex có 147 huy hiệu
1) Read this passage carefully then answer the following questions.
His name is Minh. He teaches English in a big school in town. The school is not near his house so he travels to work by motorbike. He often leaves his house at 6.30 in the morning and goes home at 11.30. He has lunch at twelve o'clock. In the afternoon, he doesn't go to school, he reads books, watches TV and plays sports. He s his job very much.
1) Is Mr Minh a farmer? . . . No, he isn't ..............................
2) How does he travel to work? ... He travels to work bay motorbike ..............
3) What time does he leave his house?... He leaves his house at 6.30 in the moring
4) What does he do in the afternoon?.. In the afternoon, he doesn't go to work , he reads books, watches TV, plays sports .
5) Does he his job very much? . . Yes , he does
TK MK NHA
1) Is Mr. Minh a farmer?
- No, Mr. Minh is an English teacher
2) How does he travel to work?
- He travels to work by motorbike
3) What time does he leave his house?
- He often leaves his house at 6.30 in the morning
4) What does he do in the afternoon?
- In the afternoon, he doesn't go to school, he reads books, watches TV and plays sports
5) Does he his job very much?
- He s his job very much.
Câu hỏi 8:
Đổi: 2,25 = \(\frac{9}{4}\)
Số lớn là:
2,25 : ( 9 - 4 ) x 9 = 4,05
=> Số bé là:
4,05 - 2,25 = 1,8
đ/s : 1,8
Câu hỏi 9:
Số tiền vốn là:
7 520 000 : ( 100 - 6 ) x 100 = 8 000 000 (đồng)
=> Số tiền bị lỗ là:
8 000 000 - 7 520 000 = 480 000 (đồng)
đ/s: 480 000 đồng
1 . his name nam
2. he is twenty-three years old
3. he is an engineer
4.five people in his family
5. his father is fifty
6. yes,he does
7. his mother is forty-eight years old
8. thiếu đề