1. math diary Grade Four 100 words.
After the holiday, Mr Zhong gave us a math homework and wrote an article about math diary. I have been thinking about a question: What is math diary? So I asked my mother, and she said, "Let's look for it together." I woke up in the morning and saw my mother give me some food stamps. She still has two bowls. We were going to buy breakfast in the canteen of my father's unit. My mother said to me, "How about I buy rice and you settle accounts?" I said, "Good!"
When I arrived at the canteen, my mother bought two steamed buns at fifty cents each, plus some porridge and side dishes, totaling two yuan. When I checked out, I gave my uncle who sold rice four food stamps. He smiled and said, "One ticket is enough." Give me back three yuan, and I realized that five yuan is fifty cents. I feel laughed at by others and my face is red.
I know that if I don't learn math well, I will be laughed at all my life and I will be very painful. Mathematics used to be very useful to us.
2. math diary Grade Four 100.
A few months ago, the teacher taught us about kilometers and tons. Today, my parents and grandma took me to the dinosaur park to play. I saw many road signs along the way: 60Km, which means that the speed of cars should not exceed 60Km/h and 12t, which means that the bearing capacity of this bridge should not exceed 12t.
I'm ready to go to the high shelf. At this time, a street sign appeared on my right, which is 80km. I suddenly have a question in my heart: why is the road sign on the ground 60km and the elevated road sign 80km? I told my mother this question, and my mother replied in a friendly tone: "Because there is no red light on the viaduct, non-motor vehicles and pedestrians are not allowed to get on it, so the road sign on the viaduct is 80km." As soon as my mother said this, I understood at once.
3. math diary fourth grade 100 words.
Today, I had a math class with great interest ―― move the decimal point to the right. Although the decimal point is called "small", it is extremely difficult to jump. If the decimal point of a number is shifted one, two and three places to the right, the number obtained is ` 10 times, 100 times and 1000 times respectively. ......
By analogy, the decimal point of a number is shifted to the left by one, two and three places respectively ... and the numbers obtained are one tenth, one hundredth and one thousandth of the original number respectively. ......
Please remember that although the decimal point is small, it has great skills. As long as he stretches and moves, those numbers will get bigger and smaller.
4. math diary Grade Four 100.
I like collecting stamps as well as collecting stamps. Today, I found a math problem from a set of stamps. I have a set of 1978 "steel" stamps. One * * * five dollars, eight cents each. At that time, the value of this set of stamps was 5×8=40 (minutes) =4 cents, exactly 4 cents. Twenty-six years later, this set of stamps is also valuable. 5. math diary Grade Four 100.
Today is the second day of the first month, which is a good day for my mother and I to go to my grandmother's house. In the morning, I got up early and went shopping with my mother to buy three pieces of meat. A piece of meat is 2.5 Jin, and a Jin of meat 16 yuan. My mother handed in 120 yuan. Mom also bought 3 boxes of apples and spent 150 yuan. Going to the wholesale and retail store, my mother bought three more "Want Want Gift Packages" and handed them to 150 yuan. Then we went back to grandma's house happily.
When I arrived at my grandmother's house, my grandmother, uncle, aunt, cousins were all very happy.
After dinner, when we were going home, my uncle, aunt and grandmother all gave me red envelopes. When I got home and opened the red envelope, I was very happy to get eight yuan 100 yuan.
A meaningful day passed quickly!