Math diary with the theme of understanding tons.

I know more and more knowledge now, tons are also, but tons are very heavy. 1000 kg = 1 ton is also the weight of an elephant! Grams, kilograms and tons are all units of mass. These days, I have been praised by my father, praised by my mother, and never inspired by me.

Chapter 2: grams, kilograms and tons

Something's wrong with the kingdom of weight. Let's have a look!

The elephant said first, "My weight is 5 grams."

The horse went on to say, "I weigh 300 tons."

The little ant said slowly, "My weight is 1 kg."

The sparrow chirped, "My weight is 300 kilograms."

Piglet also joined in the fun: "My weight10g."

At this time, the king of the heavy country came and the animals told him their respective weights just now. Hearing this, the king burst out laughing.

The king said unhurriedly, "According to you, elephants are heavier than ants and pigs are heavier than sparrows. Do you know the relationship between grams and kilograms and tons? The forward speed between them is 1000. Your weight units are all wrong. This elephant should weigh 5 tons. 300 kilograms of horses; Ants are 1 g; Sparrows weigh 300 grams and pigs weigh 10 kg. Do you understand? "

After listening to the king's words, the animals suddenly realized that they were embarrassed to laugh.

Be careful in the future, son, or you will make a joke.

Chapter 3: Interesting Tons

Recently, the teacher taught us a new unit of measurement-ton, which is said to be used to measure heavyweight items. When I got home today, I couldn't wait to ask my mother, "What is the heaviest thing in our family?" Mom joked, "You are!" Huh? Can I also measure it in tons? "Ha ha ha ha." At this time, my mother understood the intention of my question: "Silly child, your weight is only 25 kg, 1 ton = 1000 kg, you 40 talents 1 ton!" The heaviest person in the world is 283 kilograms, so it takes 3~4 to reach 1 ton! ""Oh, I see. Ton is a big fat man, fatter than the fattest person in the world. " "Ha ha ha ha." Mom smiled again.

Tons are really interesting!

Chapter 4: About Tons of math diary

We studied kilometers and tons this semester, and we know that 1000m = 1km, 1t = 100kg.

Kilometers are units of length and are often used on expressways. For example, the total length of Yongtaiwen Expressway is about 367 kilometers, the whole marathon is about 42 kilometers, and the intercity train can reach 329 kilometers per hour.

Of course, I also have a certain understanding of the unit of mass: ton, the unit of mass, also called the unit of weight. For example, I will use grams to represent an ant instead of tons, because I know that tons represent heavier objects and the load capacity of trucks will be expressed in tons.

There is still a lot of knowledge about kilometers and tons, I hope to learn more!

Chapter 5: Kilometers and Tons

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.

There is so much knowledge along the way!

Chapter 6: Understanding of Tonnage

Yesterday, my mother and I went to the grain wholesale market to see how much 1 ton weighed. We first came to a store selling grain and saw a lot of rice piled up in the store. Each bag of rice is marked with 25 kilograms. At this time, I was thinking, 1 ton is how many bags? I thought there was 1 ton = 1000 kg in the math book. I first worked out 25+25+25 = 100kg, and then worked out that10 is 1000.

I weighed a bag of 25 kilograms of rice with my hand, which was so heavy that I couldn't weigh it out at all. I took my bag in my hand and tried to pick it up, but I couldn't. So I tried to use my back, but I couldn't recite it. I think 1 bag of 25 kilograms of rice is so heavy, not to mention 1 ton. 1 ton is 40 25 kg! It will definitely be heavier. We also saw a lot of rice in the shop. I asked the uncle in the shop how much this pile of rice weighed. He said it weighed 60 tons. I couldn't lift 25 Jin of rice just now, so 60 tons is heavier.

My mother and I went out to the grain wholesale market and went to the slaughterhouse to see how much a pig weighed. When we came to the pigsty, we saw a big and fat pig. Each pig is about 1 15 kg, and there are 20 pigs in a pigsty. So how many pigs is 1 ton? So how much does 20 You Zhu weigh? I thought 10 100 was 1000, so 10 pigs are about 1 ton,150kg, so 20 pigs are about 2 tons and 300kg. Today, I learned how much 1 ton weighs, and how many tons and dozens of tons weigh. What a great harvest today!