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29 tháng 6 2017
Ta có: tổng = xi măng + cát + sỏi = 1 + 2 + 6 = 9
- Tỉ lệ phần trăm của xi măng = (xi măng . 100 / tổng) % = \(\left( {1.{{100} \over 9}} \right)\% = 11,11\% \)
- Tỉ lệ phần trăm của cát = (cát . 100 / tổng) % = \(\left( {2.{{100} \over 9}} \right)\% = 22,22\% \)
- Tỉ lệ phần trăm của sỏi = (sỏi . 100 / tổng) % = \(\left( {6.{{100} \over 9}} \right)\% = 66,67\% \)
b) Biểu đồ ô vuông:


CG
5
24 tháng 8 2017
285
= 28 . 28 . 28 . 28 . 28
= 784 . 784 . 28
= 614656 . 28
= 17210368
QS
9























nữa nè
nữa nè
nữa nè
hi hi thấy sao
ha ha các chế tháy sao
thêm nữa nè
nữa nè hi hi
nữa nè 

In my school, there are many teachers.I love all the teachers who taught me but the one i loved the most was teaching English while studying in elemantary school. her name is Tham , Miss Tham is about 29 years old and has about 1m64cm ,she has long hair on her back, long black hair and smooth. Facial oval eyes with large double eyelid clear. While teaching you if you have a fever, she will take you to the medical center immediately. She is sociable and happy with everyone whether her friends and students . She loves us all and we love her very much.
Everyone sat up expectantly. It was a maths period and all of us waited eagerly for our maths teacher, Mrs Huang, to come into the class. She is very popular among us. In fact, she is my favorite teacher.
Mrs Huang has short curly hair and wears thick glasses, which makes her look stern. However, she is actually very approachable and is always ready to lend an ear to our problems. She is motherly and cares very much for us. I remember once when I fell and hurt my knee. Mrs Huang helped me to stop the bleeding and took me to the clinic. I was very grateful to her.
I used to dis maths when I was younger because I found it far too complicated. Mrs Huang always makes maths lessons interesting and easy to understand. She is very patient in explaining maths problems to us and always makes sure everyone understands. Under her guidance, my maths has improved by leaps and bounds.
I have grown to love maths and I always score high marks in my maths tests now. It is all because of my favorite teacher.
My favorite teacher was my freshman math teacher. He was one of the the goofiest people I ever knew, but incredibly nice and you could really tell he cared about the subject and all of his students. His class was always the best - I felt most confortable in the environment he set up and it was fun every day. I had hated math up until that point, but he taught me to love it! He was always so clear in his explanations and I could always understand what he was trying to get at. He always came into the classroom bring a positive attitude that set us all going.
"Remember guys fruit trees
There is a list there of old hopes he remembered "
That is the verse talking about a teacher, that has always been beloved profession, respected. I loved his teachers, but he left me the deepest impression is her homeroom teacher Kim You- our.
She had very long hair, smooth, black and always subtly scented. Her big round eyes, pick, extremely resilient but equally tender. When we reached great achievements in learning, she always looked at us with a loving gaze. And every time we make a mistake, her steadfast eyes sad again. Her long slender hands, always write down the emotional context to convey a lesson to us. She also helps us remember all longer than his voice. Her voice was very inspiring, sometimes gentle, warm, sometimes witty, playful cause we always focus on the lesson, forget all the time. Her gentle personality, integrity, she always serious with his work. Every day, she is very frisky with us, but he went to class, she is also very strict. With her teaching is not just a profession, but a passion. She is always well prepared for his lectures, sometimes she uses both short clips of lessons, help us to be able to absorb all the fastest. Although she was a school teacher, but she still, it's her hobby. She always wake up to three, four o'clock in the morning after going to bed because lesson plans, she continued to study. "Learning as a boat upstream so, the dear!" Her words penetrated our hearts.
I remember most was when she went to visit our class. Then, on the face and in her eyes express anxiety, restlessness. Then, we just broke perhaps, is that day, her philosophy exam but she was out of action to accompany our class because she was afraid that no matter what, or with us, she will grace lifelong hatred.
Another memorable experience was when my other summer school. Then, I was pretty scared because I took two weeks vacation. I walked into class with anxious mood. She knew I was out of school, so she went through me the place I do not know, do not understand, and then ask you to lend me books to cover all copy. At that time I felt relieved, grateful she and her friends.
Truly, truly noble profession, the purse: "Occupation is the ferryman teachers across the river of knowledge." That was the job that I wished later adulthood. Teacher's Day Vietnam 20-11, I want to send greetings to her, saying, "I wish you good health! I love her so much!"
In the school I love you, but the most beloved sister is Miss Minh Minh is the teacher of this class she is 36 years old and she is teaching her fifth grade is a very cheerful and intelligent people. There is a strict but in class everyone loves you because she is a second mother of us so I love you and hope she teaches me until the end of elementary school.