Current location - Training Enrollment Network - Mathematics courses - Math diary of Kim and kg.
Math diary of Kim and kg.
Today's math class is really interesting. We made two new friends. They are weight-related units: grams and kilograms. I know that the weight of a two-cent coin is about 1 g, and the weight of two bags of salt is 1 kg. We were all overjoyed when the teacher showed us two careless diaries. I wrote it down to remind myself not to be careless.

Diary of a spring outing

Our teacher took us on a spring outing today! My mother prepared delicious food for me: two eggs of 50 kg, an apple of 150 kg, bread, coke and so on. ...

We visited the zoo, where we saw many animals. I like elephants weighing 3000 grams and giraffes with necks up to 3 grams best. I also saw many interesting animals. I am really happy today.

Diary 2: Letter to Grandma

Grandma: Hello, I'm your grandson, Tiny. I'm 8 years old and I'm strong. I weigh 45 grams. I can eat two 60kg eggs and a bag of 250kg milk every morning. You can eat three 100 Jin buns at noon, and eat more at night. I can eat nearly 1 gram of rice with my parents. I hope you can come to see me.

The teacher told us that the weight of lighter objects is usually expressed in grams, such as an egg, an apple, a bag of milk, a steamed bread and so on. The weight of elephants and us should be expressed in kilograms, the neck length of giraffes should be expressed in meters, and meters are the unit of length. I know everything and try not to be careless.

After dinner, my father and I went for a walk outside. I told him the interesting things in math class today. When we passed a fruit supermarket, I asked my father to buy me fruit. My father said, "I will test you and get it right, and then I will buy it for you." I listened and said happily, "Take the exam! I can't fail the exam. " Dad said, "1 kg How many apples are there?" I thought quickly: today, the teacher told us that an apple is about 100g, 1kg = 1000mg, and there are 10 apples in it, so it weighs about 100 apples 1kg .. I shouted. Dad kissed me and said, "All right!" He bought me 1 kg of apples, and I ate them happily, which made me feel sweet at once. ...

There seems to be mathematics knowledge everywhere in life. Learning mathematics well can help us solve many problems in life.