Length unit math diary, write a math journal using time and length units

Last week, we studied fractions. Fractions have numerators, denominators and fraction lines, for example: 1 3, 3 is the denominator, 1 is the numerator, and the middle horizontal is the fraction line.

There are many places in life where fractions are used, for example: a book has 30 pages, and each page is 1 30 of a book. Fractions can also be used to add or subtract!

For example, one half plus one half equals two in half, which is 1. Why is this so?

If a loaf of bread divides it into two equal parts, each of which is 1 2 of the loaf, and then the two portions are put together, and there are 2 1 2, which is exactly one loaf. When adding and subtracting fractions, if the denominator is the same, ignore the denominator and add the numerators. And the numerator and denominator of 2 2 are the same, which is 1.

I also learned to compare the size of the fraction, and the teacher taught us the formula: the numerator is the same as the denominator, the fraction with the larger denominator is smaller, and the fraction with the smaller denominator is larger; The denominator is the same as the fraction larger than the numerator, and the fraction with the smaller numerator is smaller.

Today I was bored at home, I picked up a meter ruler to play, I saw that the table was quite large, I wanted to measure how long it was, and it turned out that it was a square with a side length of one meter. Then I went around measuring some objects, a cuboid mirror, about the size of a hand, which was 50 centimeters long. From the process of my measurement, I learned a lot of knowledge, and it was fun and insightful. That's nice!

Wednesday, May 20, 2020.

Today, my mother and I walked to the factory, a total of 2,500 meters, and when we walked 500 meters, we stopped to buy a pancake fruit, and at this time, my mother asked me, "How many meters do you have to walk?" I said

2500-500 = 2000 meters. "As we walked on, getting more and more tired, I remembered that there was a 120-ton electronic scale very close to our factory.

Although I was very tired, my mother and I insisted on walking forward, walking, I saw a big sign of 120 tons of electronic scales in front of me, and my mother said to me: "120 tons of electronic scales are only 200 meters away from our house, how many meters have we walked now?" I said

2500-200 = 2300 meters. "We talked and went home. Math is so interesting, it's everywhere in life.

Summary. Today my mom and I went to the supermarket to buy something because tomorrow we are going on a trip together.

We bought a Toy Story ball egg for 6 yuan, a pringles potato chips for 9 yuan and 8 jiao, a box of Apollo ice cream for 13 yuan and 8 jiao, three cups of seafood-flavored cup noodles with a unit price of 5 yuan, XO sauce seafood flavor three cups at a unit price of 5 yuan, a five-spice beef flavor three-cup unit price of 5 yuan, two Vinda rolls with a unit price of 30 yuan and 8 jiao, two Jierou rolling paper with a unit price of 27 yuan and 8 jiao, two Qingfeng rolling paper with a unit price of 17 yuan and 8 jiao, and a bag of dumplings at 30 yuan and 8 jiao.

Formula: Ball x 1= RMB.

Write a math journal using time and length units.

Today we were in math class, and the teacher told us to study. Time units are seconds, minutes, and hours.

Teaches us to look at the time according to the clock.

At the same time, it also taught us how to use the length of the incoming material to support the length of the unit in millimeters, centimeters, decimeters, meters, and kilometers.

Write a math journal, 200 words, five in ten length units. Time unit teacher, can you enlarge the words a little bit.

Today my mom and I went to the supermarket to buy something because tomorrow we are going on a trip together. We bought a Toy Story ball egg for 6 yuan, a pringles potato chips for 9 yuan and 8 jiao, a box of Apollo ice cream for 13 yuan and 8 jiao, three cups of seafood-flavored cup noodles with a unit price of 5 yuan, XO sauce seafood flavor three cups at a unit price of 5 yuan, a five-spice beef flavor three-cup unit price of 5 yuan, two Vinda rolls with a unit price of 30 yuan and 8 jiao, two Jierou rolling paper with a unit price of 27 yuan and 8 jiao, two Qingfeng rolling paper with a unit price of 17 yuan and 8 jiao, and a bag of dumplings at 30 yuan and 8 jiao. Equation:

Ball Egg x 1= Yuan.

The teacher has ten units of length and five units of time.

Write a math diary of 200 words.

**Inside.

Teacher, I'm in 3rd grade.

Part II.

Summary. Today, I learned millimeters, decimeters, kilometers. I know that small items are measured in millimeters, such as a small notebook with a thickness of 3 mm and an eraser with a thickness of 8 mm.

The solid glue is 1 decimeter high, and the Coca-Cola bottle is 2 decimeters high. When the school arrives at my house, it is measured in kilometers, and the speed of the car is measured in kilometers per hour.

1 m = 10 decimeters, 1 decimeter = 10 centimeters, 1 centimeter = 10 millimeters, 1 meter = 100 centimeters, 1 meter = 100 millimeters, 1 decimeter = 100 millimeters.

How to write a 3rd grade math length unit diary?

Today, I learned millimeters, decimeters, kilometers. I know that small items are measured in millimeters, such as a small notebook with a thickness of 3 mm and an eraser with a thickness of 8 mm. The solid glue is 1 decimeter high, and the Coca-Cola bottle is 2 decimeters high.

When the school arrives at my house, it is measured in kilometers, and the speed of the car is measured in kilometers per hour. 1 m = 10 decimeters, 1 decimeter = 10 centimeters, 1 centimeter = 10 millimeters, 1 meter = 100 centimeters, 1 meter = 100 millimeters, 1 decimeter = 100 millimeters.

Hope it helps.

Thank you. Please give a thumbs up thank you.