1. The application of mathematics was sunny on Friday.
In life, mathematics is everywhere. For example: buy food! Buy stationery! Measuring cloth, etc. , all need to use mathematics. This semester, the teacher taught a new knowledge, that is, the multiplication and division of decimals. This knowledge helps me a lot!
Last night, my mother went to buy oranges together. A kilo of oranges 1.8 yuan. My mother bought 4.5 kg and should pay 8. 1 yuan. But the clerk was careless and didn't know how to calculate it, so it became 9 yuan money. Fortunately, this semester, I used the knowledge of Protestantism, and after doing a calculation in my mind, I immediately corrected the salesman's mistake.
Not only did my aunt, the shop assistant, praise me for my cleverness and my ability to multiply and divide decimals in such a small city, but my mother also praised me for saving her 0.9 yuan on the way home, and the knowledge I learned can be applied in my life. Yes! If you don't learn this math well, it's not only 0.9 yuan that will lose, but also hundreds, thousands or even hundreds of millions!
On Sunday morning, my grandfather and I went to the pharmacy in the lotus pond and bought two boxes of pills-two boxes of 44 yuan and one box of 22 yuan. Grandpa gave her 50 yuan, and the clerk gave it to Grandpa 6 yuan. After I found the change, I calculated it with decimal addition and subtraction. Grandpa can also pay like this: 1. Give it to 40 yuan, the shop assistant, and then pay 5 yuan. The asking price is 1 yuan. 2. If Grandpa has change, he can pay 40 yuan first and then 4 yuan. By buying medicine with grandpa this time, I know that mathematics is closely related to our lives.
3.65438+ February 65438+Thursday 06 sunny
Yesterday, I got 95 points in math. I made a mistake in filling in the blanks and writing questions. The teacher reviewed the fill-in-the-blank questions for us before the exam. I didn't recite it carefully, but I remembered it carefully. I was thinking about something else when I recited it, and I didn't remember it at all. So when I took the exam, I couldn't remember it anyway, so I wrote a "number size" casually. I didn't see the meaning of the title clearly, and it was wrong to write "X" as "⊙". This grade, the first 1 question is because my attitude is not correct, and the second question is because I didn't review it carefully. I will definitely do these two things in the future, but I can't be careless. Teacher, I can't get satisfactory results in every exam. Since I took interesting math, I understand that the most important thing in learning math is understanding. It's no use just copying other people's answers. It's no use copying them. So I will listen carefully in the future and strive for excellent results.
It's sunny on Friday
After this test of curly hair, I found that my carelessness was not committed, but not so serious. The seventh question of the fill-in-the-blank question is a special part of the book, which is all my mistakes that I didn't read carefully; There is another question in the third part of the third question that is wrong because you don't look at the problem carefully and think it can't be worked out easily; I shouldn't make mistakes in thinking training. I should know all those questions. Just because of the wrong idea in my mind, I think this question is too simple, so I chose the wrong one. Not only did I make mistakes in exams, but I also had many jealousy problems in my daily life. For example, when I am writing, I often make careless mistakes and make mistakes. Later, I checked and found that I often do my homework and play for a while, and I am most likely to be careless, half-hearted and make mistakes. But now that I've got rid of my half-hearted problem, I believe I'll be better after I get rid of other problems.
5. Mathematics in life
I am relieved that all the exams have been finished today. I sat in my seat and did nothing. I came across a book called Mathematical Genius in my desk by accident. Like a man who finds his way out in the desert, I am in high spirits. When I opened it, it was a portrait of Hua, and I found the "mathematical genius puzzle" according to the catalogue. I thought: Hua is not a detective. How can he solve the case? I read this article with questions. After reading it, I realized that the most important thing for Hua to solve this mystery is that he is good at mathematics and can calculate according to the numbers and symbols in mathematics. My wish is to be a detective like Sherlock Holmes. However, being a detective, like Hua, has a wealth of mathematical knowledge. Now, only by learning math well can I realize my wish.
6. The smallest egg in the world is sunny on Thursday,10,21.
A few days ago in math class, the teacher gave us an application problem, saying that the largest bird egg in the world is ostrich egg, and its egg has 1300 grams. How much does the smallest egg weigh? I put a question mark in my mind. After surfing the Internet and reading books in various ways, I finally found the answer in the China Youth Encyclopedia: the smallest egg is a hummingbird egg, and the hummingbird mother lays 2~ 1 egg at a time, which is only the size of a bean, each weighing 0.5g About 200 hummingbird eggs are the size of an egg. Hummingbirds can fly out of the nest for food and start an independent outdoor life after living for about 20 days. What interesting knowledge, it can not only learn, but also increase extracurricular knowledge. It really kills two birds with one stone.